code: def fill_engine(self, engine):
      # Index 20 vectors (set their data to a unique string)
      for index in self.all_values:
          v = numpy.ones(self.dim) * index
          engine.store_vector(v, index)
      self.assertSequenceEqual(
          sorted(self.get_keys(engine)), self.all_values
      )
  
imports: import itertools
  import unittest
  import numpy
  import scipy
  from future.builtins import range
  from nearpy import Engine
  from nearpy.utils.utils import unitvec
  from nearpy.hashes import UniBucket
label_desc: Use image node_id 3 for calling the TestDelete obj's underlying member method code with example usage: obj.fill_engine(engine) without return types