code: public Matrix4d mul(Matrix4x3dc right, Matrix4d dest) {
          if ((properties & PROPERTY_IDENTITY) != 0)
              return dest.set(right);
          else if ((right.properties() & PROPERTY_IDENTITY) != 0)
              return dest.set(this);
          return mulGeneric(right, dest);
      }
docs: /* (non-Javadoc)
  @see org.joml.Matrix4dc#mul(org.joml.Matrix4x3dc, org.joml.Matrix4d)