Instance of 'Future<Map<dynamic, dynamic>>'
void main(List<String> arguments) {
NumberStepsKilometers NumberStepsKilometersObj = new NumberStepsKilometers();
var answer = NumberStepsKilometersObj.tail_dactyl();
print(answer);
}
//ОПИСАНИЕ КЛАССА
class NumberStepsKilometers {
.........
return return_value;
}
}