code: public Vector2f mulPosition(Matrix3x2fc mat, Vector2f dest) {
          dest.set(mat.m00() * x + mat.m10() * y + mat.m20(),
                   mat.m01() * x + mat.m11() * y + mat.m21());
          return dest;
      }
docs: /* (non-Javadoc)
  @see org.joml.Vector2fc#mulPosition(org.joml.Matrix3x2fc, org.joml.Vector2f)