public Matrix2d postMultBy(Matrix2d rightSide) {
Matrix2d ret = new Matrix2d(touchvgPINVOKE.Matrix2d_postMultBy(swigCPtr, Matrix2d.getCPtr(rightSide)), false);
if (touchvgPINVOKE.SWIGPendingException.Pending) throw touchvgPINVOKE.SWIGPendingException.Retrieve();
return ret;
}