code: function UMLSequenceDiagram() {
          UMLDiagram.apply(this, arguments);
          this.showSequenceNumber = true;
          this.showSignature = true;
          this.showActivation = true;
      }
docs: ************************************************************************
  *
  SEQUENCE DIAGRAM VIEWS                         *
  *
  ************************************************************************ 
  UMLSequenceDiagram
  @constructor
  @extends UMLDiagram