def _asdict(self):
    """Create a dictionary snapshot of the current config values."""
    # Start with any default values we have, and override with loaded values,
    # and then override with flag values.
    retval = {key: self._declarations[key].default_value for
              key in self._declarations if self._declarations[key].has_default}
    retval.update(self._loaded_values)
    # Only update keys that are declared so we don't allow injecting
    # un-declared keys via commandline flags.
    for key, value in self._modules['six'].iteritems(self._flag_values):
      if key in self._declarations:
        retval[key] = value
    return retval
Create a dictionary snapshot of the current config values.