def to_special_value(self, value):
if isinstance(value, utils.NoAssert):<EOL><INDENT>return self.spdx_namespace.noassertion<EOL><DEDENT>elif isinstance(value, utils.SPDXNone):<EOL><INDENT>return self.spdx_namespace.none<EOL><DEDENT>else:<EOL><INDENT>return Literal(value)<EOL><DEDENT>
Return proper spdx term or Literal