persistable sclass GPolymorphicOperator<T> extends GAbstractOperator<T> {
  settable new L<GOperator<T>> definitions;

  *(S *name, GOperator<T>... definitions) {
    this.definitions = asList(definitions);
  }
  
  toString {
    ret name + " [polymorphic operator]";
  }
  
  S toStringWithDefinitions() {
    ret name + " - polymorphic operator with " + n2(definitions, "definition") + ":\n"
      + lines_rtrim(indentAll(definitions));
  }
}

Began life as a copy of #1033956