fn() toLower

Convert characters in sequence or StringSet to lower case in-place.

/*!
 * @fn toLower
 * 
 * @headerfile <seqan/modifier.h>
 * 
 * @brief Convert characters in sequence or StringSet to lower case in-place.
 * 
 * @signature void toLower(sequence);
 * @signature void toLower(stringSet);
 * 
 * @param[in,out] sequence The SequenceConcept to convert to lower-case.
 * @param[in,out] stringSet The StringSet to convert to lower-case.
 */