/**
  * A string value that determines the join style between lines. Specify the string <code>
  * GWTCanvas.ROUND</code> for round joins, <code>GWTCanvas.BEVEL</code> for beveled joins, or
  * <code>GWTCanvas.MITER</code> for miter joins. If you do not set this value explicitly, the
  * canvas uses the <code>GWTCanvas.MITER</code> line join style.
  *
  * @param lineJoin
  */
 public void setLineJoin(String lineJoin) {
   impl.setLineJoin(lineJoin);
 }