docs: public static boolean invert(ZMatrixRMaj input , ZMatrixRMaj output )
      {
          LinearSolverDense<ZMatrixRMaj> solver = LinearSolverFactory_ZDRM.lu(input.numRows);
  
          if( solver.modifiesA() )
              input = input.copy();
  
          if( !solver.setA(input))
              return false;
          solver.invert(output);
          return true;
      }