docs: public INDArray exec(INDArray a, INDArray b, INDArray result) {
          a = transposeIfReq(transposeA, a);
          b = transposeIfReq(transposeB, b);
          if(result == null) {
              INDArray ret = a.mmul(b);
              return transposeIfReq(transposeResult, ret);
          } else {
  
              if(!transposeResult){
                  return a.mmuli(b, result);
              } else {
                  return a.mmuli(b, result).transpose();
              }
          }
      }