get whether this tag has a name . if true , it may be accessed via #gettagname . if false , #gettagname will return a string resembling `` unknown tag 0x1234 '' . concode_field_sep int _tagType concode_elem_sep Directory _directory concode_field_sep String getTagTypeHex concode_elem_sep int getTagType concode_elem_sep String getDirectoryName concode_elem_sep String getTagName concode_elem_sep String toString concode_elem_sep String getDescription
boolean function ( ) { return _directory . hasTagName ( _tagType ) ; }