checks if the module is empty . this is analogous to calling size == 0 concode_field_sep PlaceHolder placeHolder concode_field_sep MutableValue<Literal> add concode_elem_sep MutableValue<Literal> add concode_elem_sep MutableValue<Literal> add concode_elem_sep boolean contains concode_elem_sep boolean contains concode_elem_sep Literal getLiteral concode_elem_sep int size concode_elem_sep MutableValue<Literal> get concode_elem_sep MutableValue<Literal> getOrCreate concode_elem_sep MutableValue<Literal> remove
boolean function ( ) { return size ( ) == 0 ; }