code: public SDVariable mmul(String name, SDVariable other, @NonNull MMulTranspose mMulTranspose) {
          return sameDiff.mmul(name, this, other, mMulTranspose);
      }
docs: Matrix multiplication: out = mmul(this,other)
  
  @param name          Name of the output variable
  @param other         Other variable to perform matrix multiplication with
  @param mMulTranspose Matrix transpose configuration
  @return Output variable (result of mmul)