"A defaulted parameter. Examples: length = text.size Comparison comparing(Element x, Element y) => x.hash <=> y.hash" shared abstract class DefaultedParameter() of DefaultedValueParameter | DefaultedCallableParameter | DefaultedParameterReference extends Parameter() { "The parameter." shared formal RequiredParameter parameter; "The default value." shared formal AnySpecifier specifier; shared actual formal [RequiredParameter, AnySpecifier] children; }