code: public static <T extends Transform> T multiply (
          AffineTransform a, double m00, double m01, double m10, double m11, double tx, double ty, T into) {
          return multiply(a.m00, a.m01, a.m10, a.m11, a.tx, a.ty, m00, m01, m10, m11, tx, ty, into);
      }
docs: Multiplies the supplied two affine transforms, storing the result in {@code into}. {@code
  into} may refer to the same instance as {@code a}.
  @return {@code into} for chaining.