Crew constructor
Crew({})
Implementation
Crew(
{required String name,
required String agency,
required String image,
required String wikipedia,
required List<String> launches,
required String status,
required String id}) {
this._name = name;
this._agency = agency;
this._image = image;
this._wikipedia = wikipedia;
this._launches = launches;
this._status = status;
this._id = id;
}