Method is_enum

core/generator/java/java.stoneg.py:1922–1927

(data_type)

    @staticmethod
    def is_enum(data_type):
        assert isinstance(data_type, DataType), repr(data_type)
        if is_union_type(data_type):
            return all(is_void_type(f.data_type) for f in data_type.all_fields)
        else:
            return False

    @staticmethod
    def has_value(field):