Get the type of the metadata block at the current position.
\param iterator A pointer to an existing initialized iterator.
\assert
\code iterator != NULL \endcode
\a iterator has been successfully initialized with
FLAC__metadata_iterator_init()
\retval FLAC__MetadataType
The type of the metadata block at the current iterator position.
Get the type of the metadata block at the current position.
\param iterator A pointer to an existing initialized iterator. \assert \code iterator != NULL \endcode \a iterator has been successfully initialized with FLAC__metadata_iterator_init() \retval FLAC__MetadataType The type of the metadata block at the current iterator position.