连接被破坏后使用集合安全吗?(mongocxx)

Foo::Foo() {
  connection = pool.acquire();
  db = connection.database("my_database");
  m_connection = db.collection("my_collection);
} // << connection object destroyed here but member variable m_connection is still alive

或者,我保持集合活动的事实是否足以确保连接不会返回到池?