code: def register_aliases(self, aliases):
      
      if not isinstance(aliases, BuildFileAliases):
        raise TypeError('The aliases must be a BuildFileAliases, given {}'.format(aliases))
  
      for alias, target_type in aliases.target_types.items():
        self._register_target_alias(alias, target_type)
  
      for alias, target_macro_factory in aliases.target_macro_factories.items():
        self._register_target_macro_factory_alias(alias, target_macro_factory)
  
      for alias, obj in aliases.objects.items():
        self._register_exposed_object(alias, obj)
  
      for alias, context_aware_object_factory in aliases.context_aware_object_factories.items():
        self._register_exposed_context_aware_object_factory(alias, context_aware_object_factory)
docs: Registers the given aliases to be exposed in parsed BUILD files.
  
      :param aliases: The BuildFileAliases to register.
      :type aliases: :class:`pants.build_graph.build_file_aliases.BuildFileAliases`