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diff --git a/vendor/swiftmailer/classes/Swift/KeyCache/ArrayKeyCache.php b/vendor/swiftmailer/classes/Swift/KeyCache/ArrayKeyCache.php
deleted file mode 100644
index 7a74af07..00000000
--- a/vendor/swiftmailer/classes/Swift/KeyCache/ArrayKeyCache.php
+++ /dev/null
@@ -1,206 +0,0 @@
-<?php
-
-/*
- * This file is part of SwiftMailer.
- * (c) 2004-2009 Chris Corbyn
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * A basic KeyCache backed by an array.
- *
- * @author     Chris Corbyn
- */
-class Swift_KeyCache_ArrayKeyCache implements Swift_KeyCache
-{
-    /**
-     * Cache contents.
-     *
-     * @var array
-     */
-    private $_contents = array();
-
-    /**
-     * An InputStream for cloning.
-     *
-     * @var Swift_KeyCache_KeyCacheInputStream
-     */
-    private $_stream;
-
-    /**
-     * Create a new ArrayKeyCache with the given $stream for cloning to make
-     * InputByteStreams.
-     *
-     * @param Swift_KeyCache_KeyCacheInputStream $stream
-     */
-    public function __construct(Swift_KeyCache_KeyCacheInputStream $stream)
-    {
-        $this->_stream = $stream;
-    }
-
-    /**
-     * Set a string into the cache under $itemKey for the namespace $nsKey.
-     *
-     * @see MODE_WRITE, MODE_APPEND
-     *
-     * @param string  $nsKey
-     * @param string  $itemKey
-     * @param string  $string
-     * @param int     $mode
-     */
-    public function setString($nsKey, $itemKey, $string, $mode)
-    {
-        $this->_prepareCache($nsKey);
-        switch ($mode) {
-            case self::MODE_WRITE:
-                $this->_contents[$nsKey][$itemKey] = $string;
-                break;
-            case self::MODE_APPEND:
-                if (!$this->hasKey($nsKey, $itemKey)) {
-                    $this->_contents[$nsKey][$itemKey] = '';
-                }
-                $this->_contents[$nsKey][$itemKey] .= $string;
-                break;
-            default:
-                throw new Swift_SwiftException(
-                    'Invalid mode [' . $mode . '] used to set nsKey='.
-                    $nsKey . ', itemKey=' . $itemKey
-                    );
-        }
-    }
-
-    /**
-     * Set a ByteStream into the cache under $itemKey for the namespace $nsKey.
-     *
-     * @see MODE_WRITE, MODE_APPEND
-     *
-     * @param string                 $nsKey
-     * @param string                 $itemKey
-     * @param Swift_OutputByteStream $os
-     * @param int                    $mode
-     */
-    public function importFromByteStream($nsKey, $itemKey, Swift_OutputByteStream $os, $mode)
-    {
-        $this->_prepareCache($nsKey);
-        switch ($mode) {
-            case self::MODE_WRITE:
-                $this->clearKey($nsKey, $itemKey);
-            case self::MODE_APPEND:
-                if (!$this->hasKey($nsKey, $itemKey)) {
-                    $this->_contents[$nsKey][$itemKey] = '';
-                }
-                while (false !== $bytes = $os->read(8192)) {
-                    $this->_contents[$nsKey][$itemKey] .= $bytes;
-                }
-                break;
-            default:
-                throw new Swift_SwiftException(
-                    'Invalid mode [' . $mode . '] used to set nsKey='.
-                    $nsKey . ', itemKey=' . $itemKey
-                    );
-        }
-    }
-
-    /**
-     * Provides a ByteStream which when written to, writes data to $itemKey.
-     *
-     * NOTE: The stream will always write in append mode.
-     *
-     * @param string                $nsKey
-     * @param string                $itemKey
-     * @param Swift_InputByteStream $writeThrough
-     *
-     * @return Swift_InputByteStream
-     */
-    public function getInputByteStream($nsKey, $itemKey, Swift_InputByteStream $writeThrough = null)
-    {
-        $is = clone $this->_stream;
-        $is->setKeyCache($this);
-        $is->setNsKey($nsKey);
-        $is->setItemKey($itemKey);
-        if (isset($writeThrough)) {
-            $is->setWriteThroughStream($writeThrough);
-        }
-
-        return $is;
-    }
-
-    /**
-     * Get data back out of the cache as a string.
-     *
-     * @param string $nsKey
-     * @param string $itemKey
-     *
-     * @return string
-     */
-    public function getString($nsKey, $itemKey)
-    {
-        $this->_prepareCache($nsKey);
-        if ($this->hasKey($nsKey, $itemKey)) {
-            return $this->_contents[$nsKey][$itemKey];
-        }
-    }
-
-    /**
-     * Get data back out of the cache as a ByteStream.
-     *
-     * @param string                $nsKey
-     * @param string                $itemKey
-     * @param Swift_InputByteStream $is      to write the data to
-     */
-    public function exportToByteStream($nsKey, $itemKey, Swift_InputByteStream $is)
-    {
-        $this->_prepareCache($nsKey);
-        $is->write($this->getString($nsKey, $itemKey));
-    }
-
-    /**
-     * Check if the given $itemKey exists in the namespace $nsKey.
-     *
-     * @param string $nsKey
-     * @param string $itemKey
-     *
-     * @return bool
-     */
-    public function hasKey($nsKey, $itemKey)
-    {
-        $this->_prepareCache($nsKey);
-
-        return array_key_exists($itemKey, $this->_contents[$nsKey]);
-    }
-
-    /**
-     * Clear data for $itemKey in the namespace $nsKey if it exists.
-     *
-     * @param string $nsKey
-     * @param string $itemKey
-     */
-    public function clearKey($nsKey, $itemKey)
-    {
-        unset($this->_contents[$nsKey][$itemKey]);
-    }
-
-    /**
-     * Clear all data in the namespace $nsKey if it exists.
-     *
-     * @param string $nsKey
-     */
-    public function clearAll($nsKey)
-    {
-        unset($this->_contents[$nsKey]);
-    }
-
-    /**
-     * Initialize the namespace of $nsKey if needed.
-     *
-     * @param string $nsKey
-     */
-    private function _prepareCache($nsKey)
-    {
-        if (!array_key_exists($nsKey, $this->_contents)) {
-            $this->_contents[$nsKey] = array();
-        }
-    }
-}
diff --git a/vendor/swiftmailer/classes/Swift/KeyCache/DiskKeyCache.php b/vendor/swiftmailer/classes/Swift/KeyCache/DiskKeyCache.php
deleted file mode 100644
index 73f434c4..00000000
--- a/vendor/swiftmailer/classes/Swift/KeyCache/DiskKeyCache.php
+++ /dev/null
@@ -1,324 +0,0 @@
-<?php
-
-/*
- * This file is part of SwiftMailer.
- * (c) 2004-2009 Chris Corbyn
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * A KeyCache which streams to and from disk.
- *
- * @author     Chris Corbyn
- */
-class Swift_KeyCache_DiskKeyCache implements Swift_KeyCache
-{
-    /** Signal to place pointer at start of file */
-    const POSITION_START = 0;
-
-    /** Signal to place pointer at end of file */
-    const POSITION_END = 1;
-
-    /** Signal to leave pointer in whatever position it currently is */
-    const POSITION_CURRENT = 2;
-
-    /**
-     * An InputStream for cloning.
-     *
-     * @var Swift_KeyCache_KeyCacheInputStream
-     */
-    private $_stream;
-
-    /**
-     * A path to write to.
-     *
-     * @var string
-     */
-    private $_path;
-
-    /**
-     * Stored keys.
-     *
-     * @var array
-     */
-    private $_keys = array();
-
-    /**
-     * Will be true if magic_quotes_runtime is turned on.
-     *
-     * @var bool
-     */
-    private $_quotes = false;
-
-    /**
-     * Create a new DiskKeyCache with the given $stream for cloning to make
-     * InputByteStreams, and the given $path to save to.
-     *
-     * @param Swift_KeyCache_KeyCacheInputStream $stream
-     * @param string                             $path   to save to
-     */
-    public function __construct(Swift_KeyCache_KeyCacheInputStream $stream, $path)
-    {
-        $this->_stream = $stream;
-        $this->_path = $path;
-
-        if (function_exists('get_magic_quotes_runtime') && @get_magic_quotes_runtime() == 1) {
-            $this->_quotes = true;
-        }
-    }
-
-    /**
-     * Set a string into the cache under $itemKey for the namespace $nsKey.
-     *
-     * @see MODE_WRITE, MODE_APPEND
-     *
-     * @param string  $nsKey
-     * @param string  $itemKey
-     * @param string  $string
-     * @param int     $mode
-     *
-     * @throws Swift_IoException
-     */
-    public function setString($nsKey, $itemKey, $string, $mode)
-    {
-        $this->_prepareCache($nsKey);
-        switch ($mode) {
-            case self::MODE_WRITE:
-                $fp = $this->_getHandle($nsKey, $itemKey, self::POSITION_START);
-                break;
-            case self::MODE_APPEND:
-                $fp = $this->_getHandle($nsKey, $itemKey, self::POSITION_END);
-                break;
-            default:
-                throw new Swift_SwiftException(
-                    'Invalid mode [' . $mode . '] used to set nsKey='.
-                    $nsKey . ', itemKey=' . $itemKey
-                    );
-                break;
-        }
-        fwrite($fp, $string);
-        $this->_freeHandle($nsKey, $itemKey);
-    }
-
-    /**
-     * Set a ByteStream into the cache under $itemKey for the namespace $nsKey.
-     *
-     * @see MODE_WRITE, MODE_APPEND
-     *
-     * @param string                 $nsKey
-     * @param string                 $itemKey
-     * @param Swift_OutputByteStream $os
-     * @param int                    $mode
-     *
-     * @throws Swift_IoException
-     */
-    public function importFromByteStream($nsKey, $itemKey, Swift_OutputByteStream $os, $mode)
-    {
-        $this->_prepareCache($nsKey);
-        switch ($mode) {
-            case self::MODE_WRITE:
-                $fp = $this->_getHandle($nsKey, $itemKey, self::POSITION_START);
-                break;
-            case self::MODE_APPEND:
-                $fp = $this->_getHandle($nsKey, $itemKey, self::POSITION_END);
-                break;
-            default:
-                throw new Swift_SwiftException(
-                    'Invalid mode [' . $mode . '] used to set nsKey='.
-                    $nsKey . ', itemKey=' . $itemKey
-                    );
-                break;
-        }
-        while (false !== $bytes = $os->read(8192)) {
-            fwrite($fp, $bytes);
-        }
-        $this->_freeHandle($nsKey, $itemKey);
-    }
-
-    /**
-     * Provides a ByteStream which when written to, writes data to $itemKey.
-     *
-     * NOTE: The stream will always write in append mode.
-     *
-     * @param string                $nsKey
-     * @param string                $itemKey
-     * @param Swift_InputByteStream $writeThrough
-     *
-     * @return Swift_InputByteStream
-     */
-    public function getInputByteStream($nsKey, $itemKey, Swift_InputByteStream $writeThrough = null)
-    {
-        $is = clone $this->_stream;
-        $is->setKeyCache($this);
-        $is->setNsKey($nsKey);
-        $is->setItemKey($itemKey);
-        if (isset($writeThrough)) {
-            $is->setWriteThroughStream($writeThrough);
-        }
-
-        return $is;
-    }
-
-    /**
-     * Get data back out of the cache as a string.
-     *
-     * @param string $nsKey
-     * @param string $itemKey
-     *
-     * @return string
-     *
-     * @throws Swift_IoException
-     */
-    public function getString($nsKey, $itemKey)
-    {
-        $this->_prepareCache($nsKey);
-        if ($this->hasKey($nsKey, $itemKey)) {
-            $fp = $this->_getHandle($nsKey, $itemKey, self::POSITION_START);
-            if ($this->_quotes) {
-                ini_set('magic_quotes_runtime', 0);
-            }
-            $str = '';
-            while (!feof($fp) && false !== $bytes = fread($fp, 8192)) {
-                $str .= $bytes;
-            }
-            if ($this->_quotes) {
-                ini_set('magic_quotes_runtime', 1);
-            }
-            $this->_freeHandle($nsKey, $itemKey);
-
-            return $str;
-        }
-    }
-
-    /**
-     * Get data back out of the cache as a ByteStream.
-     *
-     * @param string                $nsKey
-     * @param string                $itemKey
-     * @param Swift_InputByteStream $is      to write the data to
-     */
-    public function exportToByteStream($nsKey, $itemKey, Swift_InputByteStream $is)
-    {
-        if ($this->hasKey($nsKey, $itemKey)) {
-            $fp = $this->_getHandle($nsKey, $itemKey, self::POSITION_START);
-            if ($this->_quotes) {
-                ini_set('magic_quotes_runtime', 0);
-            }
-            while (!feof($fp) && false !== $bytes = fread($fp, 8192)) {
-                $is->write($bytes);
-            }
-            if ($this->_quotes) {
-                ini_set('magic_quotes_runtime', 1);
-            }
-            $this->_freeHandle($nsKey, $itemKey);
-        }
-    }
-
-    /**
-     * Check if the given $itemKey exists in the namespace $nsKey.
-     *
-     * @param string $nsKey
-     * @param string $itemKey
-     *
-     * @return bool
-     */
-    public function hasKey($nsKey, $itemKey)
-    {
-        return is_file($this->_path . '/' . $nsKey . '/' . $itemKey);
-    }
-
-    /**
-     * Clear data for $itemKey in the namespace $nsKey if it exists.
-     *
-     * @param string $nsKey
-     * @param string $itemKey
-     */
-    public function clearKey($nsKey, $itemKey)
-    {
-        if ($this->hasKey($nsKey, $itemKey)) {
-            $this->_freeHandle($nsKey, $itemKey);
-            unlink($this->_path . '/' . $nsKey . '/' . $itemKey);
-        }
-    }
-
-    /**
-     * Clear all data in the namespace $nsKey if it exists.
-     *
-     * @param string $nsKey
-     */
-    public function clearAll($nsKey)
-    {
-        if (array_key_exists($nsKey, $this->_keys)) {
-            foreach ($this->_keys[$nsKey] as $itemKey=>$null) {
-                $this->clearKey($nsKey, $itemKey);
-            }
-            if (is_dir($this->_path . '/' . $nsKey)) {
-                rmdir($this->_path . '/' . $nsKey);
-            }
-            unset($this->_keys[$nsKey]);
-        }
-    }
-
-    /**
-     * Initialize the namespace of $nsKey if needed.
-     *
-     * @param string $nsKey
-     */
-    private function _prepareCache($nsKey)
-    {
-        $cacheDir = $this->_path . '/' . $nsKey;
-        if (!is_dir($cacheDir)) {
-            if (!mkdir($cacheDir)) {
-                throw new Swift_IoException('Failed to create cache directory ' . $cacheDir);
-            }
-            $this->_keys[$nsKey] = array();
-        }
-    }
-
-    /**
-     * Get a file handle on the cache item.
-     *
-     * @param string  $nsKey
-     * @param string  $itemKey
-     * @param int     $position
-     *
-     * @return resource
-     */
-    private function _getHandle($nsKey, $itemKey, $position)
-    {
-        if (!isset($this->_keys[$nsKey][$itemKey])) {
-            $openMode = $this->hasKey($nsKey, $itemKey)
-                ? 'r+b'
-                : 'w+b'
-                ;
-            $fp = fopen($this->_path . '/' . $nsKey . '/' . $itemKey, $openMode);
-            $this->_keys[$nsKey][$itemKey] = $fp;
-        }
-        if (self::POSITION_START == $position) {
-            fseek($this->_keys[$nsKey][$itemKey], 0, SEEK_SET);
-        } elseif (self::POSITION_END == $position) {
-            fseek($this->_keys[$nsKey][$itemKey], 0, SEEK_END);
-        }
-
-        return $this->_keys[$nsKey][$itemKey];
-    }
-
-    private function _freeHandle($nsKey, $itemKey)
-    {
-        $fp = $this->_getHandle($nsKey, $itemKey, self::POSITION_CURRENT);
-        fclose($fp);
-        $this->_keys[$nsKey][$itemKey] = null;
-    }
-
-    /**
-     * Destructor.
-     */
-    public function __destruct()
-    {
-        foreach ($this->_keys as $nsKey=>$null) {
-            $this->clearAll($nsKey);
-        }
-    }
-}
diff --git a/vendor/swiftmailer/classes/Swift/KeyCache/KeyCacheInputStream.php b/vendor/swiftmailer/classes/Swift/KeyCache/KeyCacheInputStream.php
deleted file mode 100644
index 76039d8a..00000000
--- a/vendor/swiftmailer/classes/Swift/KeyCache/KeyCacheInputStream.php
+++ /dev/null
@@ -1,51 +0,0 @@
-<?php
-
-/*
- * This file is part of SwiftMailer.
- * (c) 2004-2009 Chris Corbyn
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Writes data to a KeyCache using a stream.
- *
- * @author     Chris Corbyn
- */
-interface Swift_KeyCache_KeyCacheInputStream extends Swift_InputByteStream
-{
-    /**
-     * Set the KeyCache to wrap.
-     *
-     * @param Swift_KeyCache $keyCache
-     */
-    public function setKeyCache(Swift_KeyCache $keyCache);
-
-    /**
-     * Set the nsKey which will be written to.
-     *
-     * @param string $nsKey
-     */
-    public function setNsKey($nsKey);
-
-    /**
-     * Set the itemKey which will be written to.
-     *
-     * @param string $itemKey
-     */
-    public function setItemKey($itemKey);
-
-    /**
-     * Specify a stream to write through for each write().
-     *
-     * @param Swift_InputByteStream $is
-     */
-    public function setWriteThroughStream(Swift_InputByteStream $is);
-
-    /**
-     * Any implementation should be cloneable, allowing the clone to access a
-     * separate $nsKey and $itemKey.
-     */
-    public function __clone();
-}
diff --git a/vendor/swiftmailer/classes/Swift/KeyCache/NullKeyCache.php b/vendor/swiftmailer/classes/Swift/KeyCache/NullKeyCache.php
deleted file mode 100644
index 79ab89fc..00000000
--- a/vendor/swiftmailer/classes/Swift/KeyCache/NullKeyCache.php
+++ /dev/null
@@ -1,115 +0,0 @@
-<?php
-
-/*
- * This file is part of SwiftMailer.
- * (c) 2004-2009 Chris Corbyn
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * A null KeyCache that does not cache at all.
- *
- * @author     Chris Corbyn
- */
-class Swift_KeyCache_NullKeyCache implements Swift_KeyCache
-{
-    /**
-     * Set a string into the cache under $itemKey for the namespace $nsKey.
-     *
-     * @see MODE_WRITE, MODE_APPEND
-     *
-     * @param string  $nsKey
-     * @param string  $itemKey
-     * @param string  $string
-     * @param int     $mode
-     */
-    public function setString($nsKey, $itemKey, $string, $mode)
-    {
-    }
-
-    /**
-     * Set a ByteStream into the cache under $itemKey for the namespace $nsKey.
-     *
-     * @see MODE_WRITE, MODE_APPEND
-     *
-     * @param string                 $nsKey
-     * @param string                 $itemKey
-     * @param Swift_OutputByteStream $os
-     * @param int                    $mode
-     */
-    public function importFromByteStream($nsKey, $itemKey, Swift_OutputByteStream $os, $mode)
-    {
-    }
-
-    /**
-     * Provides a ByteStream which when written to, writes data to $itemKey.
-     *
-     * NOTE: The stream will always write in append mode.
-     *
-     * @param string                $nsKey
-     * @param string                $itemKey
-     * @param Swift_InputByteStream $writeThrough
-     *
-     * @return Swift_InputByteStream
-     */
-    public function getInputByteStream($nsKey, $itemKey, Swift_InputByteStream $writeThrough = null)
-    {
-    }
-
-    /**
-     * Get data back out of the cache as a string.
-     *
-     * @param string $nsKey
-     * @param string $itemKey
-     *
-     * @return string
-     */
-    public function getString($nsKey, $itemKey)
-    {
-    }
-
-    /**
-     * Get data back out of the cache as a ByteStream.
-     *
-     * @param string                $nsKey
-     * @param string                $itemKey
-     * @param Swift_InputByteStream $is      to write the data to
-     */
-    public function exportToByteStream($nsKey, $itemKey, Swift_InputByteStream $is)
-    {
-    }
-
-    /**
-     * Check if the given $itemKey exists in the namespace $nsKey.
-     *
-     * @param string $nsKey
-     * @param string $itemKey
-     *
-     * @return bool
-     */
-    public function hasKey($nsKey, $itemKey)
-    {
-        return false;
-    }
-
-    /**
-     * Clear data for $itemKey in the namespace $nsKey if it exists.
-     *
-     * @param string $nsKey
-     * @param string $itemKey
-     */
-    public function clearKey($nsKey, $itemKey)
-    {
-    }
-
-    /**
-     * Clear all data in the namespace $nsKey if it exists.
-     *
-     * @param string $nsKey
-     */
-    public function clearAll($nsKey)
-    {
-    }
-}
diff --git a/vendor/swiftmailer/classes/Swift/KeyCache/SimpleKeyCacheInputStream.php b/vendor/swiftmailer/classes/Swift/KeyCache/SimpleKeyCacheInputStream.php
deleted file mode 100644
index e829c8fd..00000000
--- a/vendor/swiftmailer/classes/Swift/KeyCache/SimpleKeyCacheInputStream.php
+++ /dev/null
@@ -1,127 +0,0 @@
-<?php
-
-/*
- * This file is part of SwiftMailer.
- * (c) 2004-2009 Chris Corbyn
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-/**
- * Writes data to a KeyCache using a stream.
- *
- * @author     Chris Corbyn
- */
-class Swift_KeyCache_SimpleKeyCacheInputStream implements Swift_KeyCache_KeyCacheInputStream
-{
-    /** The KeyCache being written to */
-    private $_keyCache;
-
-    /** The nsKey of the KeyCache being written to */
-    private $_nsKey;
-
-    /** The itemKey of the KeyCache being written to */
-    private $_itemKey;
-
-    /** A stream to write through on each write() */
-    private $_writeThrough = null;
-
-    /**
-     * Set the KeyCache to wrap.
-     *
-     * @param Swift_KeyCache $keyCache
-     */
-    public function setKeyCache(Swift_KeyCache $keyCache)
-    {
-        $this->_keyCache = $keyCache;
-    }
-
-    /**
-     * Specify a stream to write through for each write().
-     *
-     * @param Swift_InputByteStream $is
-     */
-    public function setWriteThroughStream(Swift_InputByteStream $is)
-    {
-        $this->_writeThrough = $is;
-    }
-
-    /**
-     * Writes $bytes to the end of the stream.
-     *
-     * @param string                $bytes
-     * @param Swift_InputByteStream $is    optional
-     */
-    public function write($bytes, Swift_InputByteStream $is = null)
-    {
-        $this->_keyCache->setString(
-            $this->_nsKey, $this->_itemKey, $bytes, Swift_KeyCache::MODE_APPEND
-            );
-        if (isset($is)) {
-            $is->write($bytes);
-        }
-        if (isset($this->_writeThrough)) {
-            $this->_writeThrough->write($bytes);
-        }
-    }
-
-    /**
-     * Not used.
-     */
-    public function commit()
-    {
-    }
-
-    /**
-     * Not used.
-     */
-    public function bind(Swift_InputByteStream $is)
-    {
-    }
-
-    /**
-     * Not used.
-     */
-    public function unbind(Swift_InputByteStream $is)
-    {
-    }
-
-    /**
-     * Flush the contents of the stream (empty it) and set the internal pointer
-     * to the beginning.
-     */
-    public function flushBuffers()
-    {
-        $this->_keyCache->clearKey($this->_nsKey, $this->_itemKey);
-    }
-
-    /**
-     * Set the nsKey which will be written to.
-     *
-     * @param string $nsKey
-     */
-    public function setNsKey($nsKey)
-    {
-        $this->_nsKey = $nsKey;
-    }
-
-    /**
-     * Set the itemKey which will be written to.
-     *
-     * @param string $itemKey
-     */
-    public function setItemKey($itemKey)
-    {
-        $this->_itemKey = $itemKey;
-    }
-
-    /**
-     * Any implementation should be cloneable, allowing the clone to access a
-     * separate $nsKey and $itemKey.
-     */
-    public function __clone()
-    {
-        $this->_writeThrough = null;
-    }
-}