def METHOD_NAME(fe: 'FeatureEntry', gate: Gate) -> None:
  """Notify approvers of a review requested from a Gate."""
  gate_url = 'https://chromestatus.com/feature/%s?gate=%s' % (
    gate.feature_id, gate.key.integer_id())
  changed_props = {
      'prop_name': 'Review status change in %s' % (gate_url),
      'old_val': 'na',
      'new_val': 'review_requested',
  }
  params = {
    'changes': [changed_props],
    'gate_type': gate.gate_type,
    'feature': converters.feature_entry_to_json_verbose(fe)
  }
  # Create task to email subscribers.
  cloud_tasks_helpers.enqueue_task('/tasks/email-reviewers', params)