docs: public static int nvgraphSrSpmv(
          nvgraphHandle handle, 
          nvgraphGraphDescr descrG, 
          long weight_index, 
          Pointer alpha, 
          long x_index, 
          Pointer beta, 
          long y_index, 
          int SR)
      {
          return checkResult(nvgraphSrSpmvNative(handle, descrG, weight_index, alpha, x_index, beta, y_index, SR));
      }