getToken method Null safety
Implementation
@POST('/token')
@Headers(
<String, dynamic>{"Content-Type": "application/x-www-form-urlencoded"})
Future<Token> getToken(@Body() Map<String, dynamic> params);
@POST('/token')
@Headers(
<String, dynamic>{"Content-Type": "application/x-www-form-urlencoded"})
Future<Token> getToken(@Body() Map<String, dynamic> params);