I have Map Model as:

class Users {
  final int userID;
  final String name;
  final String username;
  final String email;
  final Address address;

  Users({this.userID, this.name, this.username, this.email, this.address});

  factory Users.fromJson(Map<String, dynamic> usersjson)=> Users(
      userID: usersjson["id"],
      name: usersjson["name"],
      username: usersjson["username"],
      email: usersjson["email"],
      address: Address.fromJson(usersjson["address"])
  );
} 

And I got json response from http API.
For list of dala in Json we can convert to MAP Users as below

 List userList = jsonDecode(response.body) as List;
    List<Users> myUserList = userList.map((data) => Users.fromJson(data)).toList();

But if i have single data in json response then how to get data in single instance of Users map?
like:

Users mySingleUser = Users.fromJson(response.body);