<s>[INST] isempty returns true if this list is empty , false otherwise . concode_field_sep ListNode head concode_elem_sep int size concode_field_sep Keyable find concode_elem_sep Enumeration elements concode_elem_sep int length concode_elem_sep void insert concode_elem_sep String toString [/INST] boolean function ( ) { return ( size == 0 ) ; </s>