code: public static <T extends Transform> T multiply (
          double m00, double m01, double m10, double m11, double tx, double ty, AffineTransform b, T into) {
          return multiply(m00, m01, m10, m11, tx, ty, b.m00, b.m01, b.m10, b.m11, b.tx, b.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 b}.
  @return {@code into} for chaining.