code: public void drawSymbol(Object parent, String name, Coordinate position, ShapeStyle style, String shapeTypeId) {
  		if (isAttached()) {
  			Element useElement = helper.createOrUpdateElement(parent, name, "use", style);
  			Dom.setElementAttributeNS(Dom.NS_XLINK, useElement, "xlink:href", "#" + shapeTypeId);
  			if (position != null) {
  				Dom.setElementAttribute(useElement, "x", Double.toString(position.getX()));
  				Dom.setElementAttribute(useElement, "y", Double.toString(position.getY()));
  			}
  		}
  	}
docs: Draw a symbol, using some predefined ShapeType.
  
  @param parent
  parent group object
  @param name
  The symbol's name.
  @param position
  The symbol's (X,Y) location on the graphics.
  @param style
  The style to apply on the symbol.
  @param shapeTypeId
  The name of the predefined ShapeType. This symbol will create a reference to this predefined type and
  take on it's characteristics.