Always provide complete, context-rich code examples in API documentation. Examples should show the full usage context and avoid abbreviated or partial code snippets that may confuse developers.

Key guidelines:

Example:

# โŒ Unclear context
t.bigint :account_id

# โœ… Complete context
create_table :subscriptions do |t|
  t.bigint :account_id
  t.bigint :event_ids, array: true, default: []
end