code: public SDVariable binomial(int nTrials, double p, long... shape) {
          return binomial(null, nTrials, p, shape);
      }
docs: Generate a new random SDVariable, where values are randomly sampled according to a Binomial distribution,
  with the specified number of trials and probability.
  
  @param nTrials Number of trials parameter for the binomial distribution
  @param p       Probability of success for each trial
  @param shape   Shape of the new random SDVariable, as a 1D array
  @return New SDVariable