/*!
* @mfn Find
*
* @headerfile <seqan/basic.h>
*
* @brief A metafunction to retrieve the index of a tag in the TagList.
*
* @signature Find<TTagList, TSearchTag>::VALUE;
*
* @tparam TSearchTag A tag to retrieve the index of.
* @tparam TTagList A tag list.
*
* @return VALUE This meta-function can be used to test whether the value of a
* TagSelector equals a specific tag.
*
* @section Examples
*
* @code{.cpp}
* AutoSeqFormat format;
* if (format.tagId == Find<AutoSeqFormat, Fasta>::VALUE)
* {
* // do something specific to Fasta format
* }
*
* // or even shorter:
*
* if (isEqual(format.tagId, Fasta()))
* {
* // do something specific to Fasta format
* }
* @endcode
*/