fn() assignQual

Extracts the quality values of a sequence file fragment.

/*!
 * @fn assignQual
 * 
 * @headerfile <seqan/file.h>
 * 
 * @brief Extracts the quality values of a sequence file fragment.
 * 
 * @signature void assignQual(qualities, seqFragment, formatTag);
 * 
 * @param[out] qualities The result quality values encoded in ASCII. The quality
 *                       values are in encoded in ASCII and must be manually
 *                       converted into zero-based values. Type: @link String
 *                       @endlink.
 * @param[in] seqFragment A sequence file fragment. Type: @link SequenceConcept
 *                        @endlink.
 * @param[in] formatTag A file format tag. Type: @link FileFormatTag @endlink.
 * 
 * @section Remarks
 * 
 * After calling <tt>split</tt> on a @link ConcatDirectStringSet @endlink to
 * divide a file into fragments, this function can be used to extrac the
 * sequence quality values of every fragment in the StringSet.
 */