Item function ( ) { return head ; }
gets the head of the item list . concode_field_sep Utterance owner concode_elem_sep Item head concode_elem_sep String TOKEN concode_elem_sep String WORD concode_elem_sep Item tail concode_elem_sep String name concode_field_sep void setTail concode_elem_sep String getName concode_elem_sep Item getTail concode_elem_sep Utterance getUtterance concode_elem_sep void setHead concode_elem_sep Item appendItem concode_elem_sep Item appendItem