code: public Matrix4x3d transpose3x3(Matrix4x3d dest) {
          double nm00 = m00;
          double nm01 = m10;
          double nm02 = m20;
          double nm10 = m01;
          double nm11 = m11;
          double nm12 = m21;
          double nm20 = m02;
          double nm21 = m12;
          double nm22 = m22;
          dest.m00 = nm00;
          dest.m01 = nm01;
          dest.m02 = nm02;
          dest.m10 = nm10;
          dest.m11 = nm11;
          dest.m12 = nm12;
          dest.m20 = nm20;
          dest.m21 = nm21;
          dest.m22 = nm22;
          dest.properties = properties;
          return dest;
      }
docs: /* (non-Javadoc)
  @see org.joml.Matrix4x3dc#transpose3x3(org.joml.Matrix4x3d)