text: #!/usr/bin/env python3
  # Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
  
  
  def is_foreign_key_field(field: str) -> bool:
      """Return true if field name is a foreign key field, i.e. ends in `_id`."""
      return len(field) > 3 and field[-3:] == "_id"
  