code: @Override
  	public void setSecondAxis(double x, double y, double z, double extent) {
  		setSecondAxis(x, y, z, extent, CoordinateSystem3D.getDefaultCoordinateSystem());
  	}
docs: Set the second axis of the box.
  The third axis is updated to be perpendicular to the two other axis.
  
  @param x
  @param y
  @param z
  @param extent