code: public Matrix3f transpose3x3(Matrix3f dest) {
          dest.m00(m00);
          dest.m01(m10);
          dest.m02(m20);
          dest.m10(m01);
          dest.m11(m11);
          dest.m12(m21);
          dest.m20(m02);
          dest.m21(m12);
          dest.m22(m22);
          return dest;
      }
docs: /* (non-Javadoc)
  @see org.joml.Matrix4x3fc#transpose3x3(org.joml.Matrix3f)