class_docstr: Common part for ConditionalRegistry and MergedRegistry.
code: def get_bindings_for_keys(self, *a, **kw):
      self._update_cache()
      return self._registry2.get_bindings_for_keys(*a, **kw)
  
imports: from __future__ import unicode_literals
  from abc import ABCMeta, abstractmethod
  from prompt_toolkit.cache import SimpleCache
  from prompt_toolkit.filters import CLIFilter, to_cli_filter, Never
  from prompt_toolkit.keys import Key, Keys
  from six import text_type, with_metaclass
label_desc: Use image node_id 7 for calling the _AddRemoveMixin obj's underlying member method code with example usage: obj.get_bindings_for_keys() and returns: self