code: def _internal_sampler(self) -> tp.ArrayLike:
      # len(sigma) describes all n=dimension first prime numbers
      sample = [self.vdc(self.index, sigma) for sigma in self.permgen.get_permutations_generator()]  # type: ignore
      return sample
  
imports: import numpy
  from numpy.random import RandomState
  import nevergrad.common.typing
  from nevergrad.common.decorators import Registry
label_desc: Use image node_id 3 for calling the HaltonSampler obj's underlying member method code with example usage: obj._internal_sampler() and returns: sample