docs: public static boolean invert( ZMatrixRMaj A )
      {
          LinearSolverDense<ZMatrixRMaj> solver = LinearSolverFactory_ZDRM.lu(A.numRows);
  
          if( solver.setA(A) ) {
              solver.invert(A);
          } else {
              return false;
          }
          return true;
      }