code: def _setup_responder(self, responder):
          
          responder.whitelist_prefix('ansible')
          responder.whitelist_prefix('ansible_mitogen')
          self._setup_simplejson(responder)
  
          # Ansible 2.3 is compatible with Python 2.4 targets, however
          # ansible/__init__.py is not. Instead, executor/module_common.py writes
          # out a 2.4-compatible namespace package for unknown reasons. So we
          # copy it here.
          responder.add_source_override(
              fullname='ansible',
              path=ansible.__file__,
              source=(ANSIBLE_PKG_OVERRIDE % (
                  ansible.__version__,
                  ansible.__author__,
              )).encode(),
              is_pkg=True,
          )
docs: Configure :class:`mitogen.master.ModuleResponder` to only permit
          certain packages, and to generate custom responses for certain modules.