friendshipsShow method
      
Future<Relationship> 
friendshipsShow({ 
    
- String? sourceId,
- String? sourceScreenName,
- String? targetId,
- String? targetScreenName,
- TransformResponse<Relationship> transform = defaultRelationshipTransform,
Returns detailed information about the relationship between two arbitrary users.
sourceId: The user ID of the subject user.
sourceScreenName: The screen name of the subject user.
targetId: The user ID of the target user.
targetScreenName: The screen name of the target user.
transform: Can be used to parse the request. By default, the response is
parsed in an isolate.
Implementation
Future<Relationship> friendshipsShow({
  String? sourceId,
  String? sourceScreenName,
  String? targetId,
  String? targetScreenName,
  TransformResponse<Relationship> transform = defaultRelationshipTransform,
}) async {
  final params = <String, String>{}
    ..addParameter('source_id', sourceId)
    ..addParameter('source_screen_name', sourceScreenName)
    ..addParameter('target_id', targetId)
    ..addParameter('target_screen_name', targetScreenName);
  return client
      .get(Uri.https('api.twitter.com', '1.1/friendships/show.json', params))
      .then(transform);
}