Object function ( ) { return _tail ; }
return the tail of this link . this will be the icon of a state . concode_field_sep ComponentRelation _relation concode_elem_sep Object _head concode_elem_sep Object _tail concode_field_sep void setTail concode_elem_sep Object getHead concode_elem_sep void setHead concode_elem_sep void setRelation concode_elem_sep String toString concode_elem_sep ComponentRelation getRelation