code: func (drng DirichletGenerator) FlatDirichlet(n int) []float64 {
  	if !(n > 0) {
  		panic(fmt.Sprintf("Invalid parameter n: %d", n))
  	}
  
  	alphas := make([]float64, n)
  	for i := 0; i < n; i++ {
  		alphas[i] = 1.0
  	}
  	return drng.dirichlet(alphas)
  }
docs: // FlatDirichlet returns random numbers of flat-dirichlet distribution (n > 0)