fn() appendSeqs

Appends all sequences stored in files of a directory to a StringSet.

/*!
 * @fn appendSeqs
 * 
 * @headerfile <seqan/file.h>
 * 
 * @brief Appends all sequences stored in files of a directory to a StringSet.
 * 
 * @signature void appendSeqs(seqSet, dirName, formatTag);
 * 
 * @param[out] seqSet A @link StringSet @endlink of sequences to append to.
 * @param[in] dirName A path to a directory or single file.
 * @param[in] formatTag A file format tag.
 * 
 * @section Remarks
 * 
 * This function scans a directory and searches for filenames corresponding to
 * the sequence format stored in <tt>formatTag</tt>, opens them and appends
 * their contained sequences to the <tt>seqSet</tt>. If <tt>formatTag</tt> is a
 * @link AutoSeqFormat @endlink object, the file format is set to the first
 * known sequence format guessed from file name.
 * 
 * @see assignSeq
 */