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Я извлекаю данные api, ниже приведен пример данных json. Я могу распечатать данные sunday , но как мне распечатать конкретные данные, внутри sunday которых 06:00

Модель

 class DetailsDataBranchesSchedule {
  String? id;
  String? sunday;
  String? monday;
  String? tuesday;
  String? wednesday;
  String? thursday;
  String? friday;
  String? saturday;
  String? createdAt;
  String? updatedAt;
  String? branchId;

  DetailsDataBranchesSchedule({
    this.id,
    this.sunday,
    this.monday,
    this.tuesday,
    this.wednesday,
    this.thursday,
    this.friday,
    this.saturday,
    this.createdAt,
    this.updatedAt,
    this.branchId,
  });
  DetailsDataBranchesSchedule.fromJson(Map<String, dynamic> json) {
    id = json["id"]?.toString();
    sunday = json["sunday"]?.toString();
    monday = json["monday"]?.toString();
    tuesday = json["tuesday"]?.toString();
    wednesday = json["wednesday"]?.toString();
    thursday = json["thursday"]?.toString();
    friday = json["friday"]?.toString();
    saturday = json["saturday"]?.toString();
    createdAt = json["createdAt"]?.toString();
    updatedAt = json["updatedAt"]?.toString();
    branchId = json["branchId"]?.toString();
  }
  Map<String, dynamic> toJson() {
    final Map<String, dynamic> data = Map<String, dynamic>();
    data["id"] = id;
    data["sunday"] = sunday;
    data["monday"] = monday;
    data["tuesday"] = tuesday;
    data["wednesday"] = wednesday;
    data["thursday"] = thursday;
    data["friday"] = friday;
    data["saturday"] = saturday;
    data["createdAt"] = createdAt;
    data["updatedAt"] = updatedAt;
    data["branchId"] = branchId;
    return data;
  }
}

class DetailsDataRestaurantRestaurantsLocales {
  String? id;
  String? name;
  String? aboutUs;
  String? address;
  String? lang;
  String? createdAt;
  String? updatedAt;
  String? restaurantId;

  DetailsDataRestaurantRestaurantsLocales({
    this.id,
    this.name,
    this.aboutUs,
    this.address,
    this.lang,
    this.createdAt,
    this.updatedAt,
    this.restaurantId,
  });
  DetailsDataRestaurantRestaurantsLocales.fromJson(Map<String, dynamic> json) {
    id = json["id"]?.toString();
    name = json["name"]?.toString();
    aboutUs = json["about_us"]?.toString();
    address = json["address"]?.toString();
    lang = json["lang"]?.toString();
    createdAt = json["createdAt"]?.toString();
    updatedAt = json["updatedAt"]?.toString();
    restaurantId = json["restaurantId"]?.toString();
  }
  Map<String, dynamic> toJson() {
    final Map<String, dynamic> data = Map<String, dynamic>();
    data["id"] = id;
    data["name"] = name;
    data["about_us"] = aboutUs;
    data["address"] = address;
    data["lang"] = lang;
    data["createdAt"] = createdAt;
    data["updatedAt"] = updatedAt;
    data["restaurantId"] = restaurantId;
    return data;
  }
}

class DetailsDataRestaurant {
  String? id;
  String? phoneNumber;
  String? email;
  String? latitude;
  String? longitude;
  String? image;
  String? restaurantRegisterDocument;
  int? status;
  int? addedBy;
  int? updatedBy;
  bool? isDeleted;
  String? createdAt;
  String? updatedAt;
  String? restaurantTypeId;
  List<DetailsDataRestaurantRestaurantsLocales?>? restaurantsLocales;

  DetailsDataRestaurant({
    this.id,
    this.phoneNumber,
    this.email,
    this.latitude,
    this.longitude,
    this.image,
    this.restaurantRegisterDocument,
    this.status,
    this.addedBy,
    this.updatedBy,
    this.isDeleted,
    this.createdAt,
    this.updatedAt,
    this.restaurantTypeId,
    this.restaurantsLocales,
  });
  DetailsDataRestaurant.fromJson(Map<String, dynamic> json) {
    id = json["id"]?.toString();
    phoneNumber = json["phone_number"]?.toString();
    email = json["email"]?.toString();
    latitude = json["latitude"]?.toString();
    longitude = json["longitude"]?.toString();
    image = json["image"]?.toString();
    restaurantRegisterDocument =
        json["restaurant_register_document"]?.toString();
    status = json["status"]?.toInt();
    addedBy = json["added_by"]?.toInt();
    updatedBy = json["updated_by"]?.toInt();
    isDeleted = json["is_deleted"];
    createdAt = json["createdAt"]?.toString();
    updatedAt = json["updatedAt"]?.toString();
    restaurantTypeId = json["restaurantTypeId"]?.toString();
    if (json["restaurants_locales"] != null) {
      final v = json["restaurants_locales"];
      final arr0 = <DetailsDataRestaurantRestaurantsLocales>[];
      v.forEach((v) {
        arr0.add(DetailsDataRestaurantRestaurantsLocales.fromJson(v));
      });
      restaurantsLocales = arr0;
    }
  }
  Map<String, dynamic> toJson() {
    final Map<String, dynamic> data = Map<String, dynamic>();
    data["id"] = id;
    data["phone_number"] = phoneNumber;
    data["email"] = email;
    data["latitude"] = latitude;
    data["longitude"] = longitude;
    data["image"] = image;
    data["restaurant_register_document"] = restaurantRegisterDocument;
    data["status"] = status;
    data["added_by"] = addedBy;
    data["updated_by"] = updatedBy;
    data["is_deleted"] = isDeleted;
    data["createdAt"] = createdAt;
    data["updatedAt"] = updatedAt;
    data["restaurantTypeId"] = restaurantTypeId;
    if (restaurantsLocales != null) {
      final v = restaurantsLocales;
      final arr0 = [];
      v!.forEach((v) {
        arr0.add(v!.toJson());
      });
      data["restaurants_locales"] = arr0;
    }
    return data;
  }
}

class DetailsDataDistrictDistrictsLocales {
  String? id;
  String? name;
  String? lang;
  String? createdAt;
  String? updatedAt;
  String? districtId;

  DetailsDataDistrictDistrictsLocales({
    this.id,
    this.name,
    this.lang,
    this.createdAt,
    this.updatedAt,
    this.districtId,
  });
  DetailsDataDistrictDistrictsLocales.fromJson(Map<String, dynamic> json) {
    id = json["id"]?.toString();
    name = json["name"]?.toString();
    lang = json["lang"]?.toString();
    createdAt = json["createdAt"]?.toString();
    updatedAt = json["updatedAt"]?.toString();
    districtId = json["districtId"]?.toString();
  }
  Map<String, dynamic> toJson() {
    final Map<String, dynamic> data = Map<String, dynamic>();
    data["id"] = id;
    data["name"] = name;
    data["lang"] = lang;
    data["createdAt"] = createdAt;
    data["updatedAt"] = updatedAt;
    data["districtId"] = districtId;
    return data;
  }
}

class DetailsDataDistrict {
  String? id;
  bool? isDeleted;
  String? createdAt;
  String? updatedAt;
  String? cityId;
  List<DetailsDataDistrictDistrictsLocales?>? districtsLocales;

  DetailsDataDistrict({
    this.id,
    this.isDeleted,
    this.createdAt,
    this.updatedAt,
    this.cityId,
    this.districtsLocales,
  });
  DetailsDataDistrict.fromJson(Map<String, dynamic> json) {
    id = json["id"]?.toString();
    isDeleted = json["is_deleted"];
    createdAt = json["createdAt"]?.toString();
    updatedAt = json["updatedAt"]?.toString();
    cityId = json["cityId"]?.toString();
    if (json["districts_locales"] != null) {
      final v = json["districts_locales"];
      final arr0 = <DetailsDataDistrictDistrictsLocales>[];
      v.forEach((v) {
        arr0.add(DetailsDataDistrictDistrictsLocales.fromJson(v));
      });
      districtsLocales = arr0;
    }
  }
  Map<String, dynamic> toJson() {
    final Map<String, dynamic> data = Map<String, dynamic>();
    data["id"] = id;
    data["is_deleted"] = isDeleted;
    data["createdAt"] = createdAt;
    data["updatedAt"] = updatedAt;
    data["cityId"] = cityId;
    if (districtsLocales != null) {
      final v = districtsLocales;
      final arr0 = [];
      v!.forEach((v) {
        arr0.add(v!.toJson());
      });
      data["districts_locales"] = arr0;
    }
    return data;
  }
}

class DetailsDataCityCitiesLocales {
  String? id;
  String? name;
  String? lang;
  String? createdAt;
  String? updatedAt;
  String? cityId;

  DetailsDataCityCitiesLocales({
    this.id,
    this.name,
    this.lang,
    this.createdAt,
    this.updatedAt,
    this.cityId,
  });
  DetailsDataCityCitiesLocales.fromJson(Map<String, dynamic> json) {
    id = json["id"]?.toString();
    name = json["name"]?.toString();
    lang = json["lang"]?.toString();
    createdAt = json["createdAt"]?.toString();
    updatedAt = json["updatedAt"]?.toString();
    cityId = json["cityId"]?.toString();
  }
  Map<String, dynamic> toJson() {
    final Map<String, dynamic> data = Map<String, dynamic>();
    data["id"] = id;
    data["name"] = name;
    data["lang"] = lang;
    data["createdAt"] = createdAt;
    data["updatedAt"] = updatedAt;
    data["cityId"] = cityId;
    return data;
  }
}

class DetailsDataCity {
  String? id;
  String? code;
  int? status;
  bool? isDeleted;
  String? createdAt;
  String? updatedAt;
  String? countryId;
  List<DetailsDataCityCitiesLocales?>? citiesLocales;

  DetailsDataCity({
    this.id,
    this.code,
    this.status,
    this.isDeleted,
    this.createdAt,
    this.updatedAt,
    this.countryId,
    this.citiesLocales,
  });
  DetailsDataCity.fromJson(Map<String, dynamic> json) {
    id = json["id"]?.toString();
    code = json["code"]?.toString();
    status = json["status"]?.toInt();
    isDeleted = json["is_deleted"];
    createdAt = json["createdAt"]?.toString();
    updatedAt = json["updatedAt"]?.toString();
    countryId = json["countryId"]?.toString();
    if (json["cities_locales"] != null) {
      final v = json["cities_locales"];
      final arr0 = <DetailsDataCityCitiesLocales>[];
      v.forEach((v) {
        arr0.add(DetailsDataCityCitiesLocales.fromJson(v));
      });
      citiesLocales = arr0;
    }
  }
  Map<String, dynamic> toJson() {
    final Map<String, dynamic> data = Map<String, dynamic>();
    data["id"] = id;
    data["code"] = code;
    data["status"] = status;
    data["is_deleted"] = isDeleted;
    data["createdAt"] = createdAt;
    data["updatedAt"] = updatedAt;
    data["countryId"] = countryId;
    if (citiesLocales != null) {
      final v = citiesLocales;
      final arr0 = [];
      v!.forEach((v) {
        arr0.add(v!.toJson());
      });
      data["cities_locales"] = arr0;
    }
    return data;
  }
}

class DetailsDataBranchesLocales {
  String? id;
  String? name;
  String? description;
  String? address;
  String? lang;
  String? createdAt;
  String? updatedAt;
  String? branchId;

  DetailsDataBranchesLocales({
    this.id,
    this.name,
    this.description,
    this.address,
    this.lang,
    this.createdAt,
    this.updatedAt,
    this.branchId,
  });
  DetailsDataBranchesLocales.fromJson(Map<String, dynamic> json) {
    id = json["id"]?.toString();
    name = json["name"]?.toString();
    description = json["description"]?.toString();
    address = json["address"]?.toString();
    lang = json["lang"]?.toString();
    createdAt = json["createdAt"]?.toString();
    updatedAt = json["updatedAt"]?.toString();
    branchId = json["branchId"]?.toString();
  }
  Map<String, dynamic> toJson() {
    final Map<String, dynamic> data = Map<String, dynamic>();
    data["id"] = id;
    data["name"] = name;
    data["description"] = description;
    data["address"] = address;
    data["lang"] = lang;
    data["createdAt"] = createdAt;
    data["updatedAt"] = updatedAt;
    data["branchId"] = branchId;
    return data;
  }
}

class DetailsData {
  String? id;
  String? email;
  String? phoneNumber;
  String? latitude;
  String? longitude;
  String? photo;
  String? countryCode;
  int? status;
  bool? hasParking;
  String? instruction;
  bool? isActive;
  bool? isDeleted;
  int? addedBy;
  int? updatedBy;
  String? createdAt;
  String? updatedAt;
  String? restaurantId;
  String? cityId;
  String? districtId;
  List<DetailsDataBranchesLocales?>? branchesLocales;
  DetailsDataCity? city;
  DetailsDataDistrict? district;
  DetailsDataRestaurant? restaurant;
  DetailsDataBranchesSchedule? branchesSchedule;

  DetailsData({
    this.id,
    this.email,
    this.phoneNumber,
    this.latitude,
    this.longitude,
    this.photo,
    this.countryCode,
    this.status,
    this.hasParking,
    this.instruction,
    this.isActive,
    this.isDeleted,
    this.addedBy,
    this.updatedBy,
    this.createdAt,
    this.updatedAt,
    this.restaurantId,
    this.cityId,
    this.districtId,
    this.branchesLocales,
    this.city,
    this.district,
    this.restaurant,
    this.branchesSchedule,
  });
  DetailsData.fromJson(Map<String, dynamic> json) {
    id = json["id"]?.toString();
    email = json["email"]?.toString();
    phoneNumber = json["phone_number"]?.toString();
    latitude = json["latitude"]?.toString();
    longitude = json["longitude"]?.toString();
    photo = json["photo"]?.toString();
    countryCode = json["country_code"]?.toString();
    status = json["status"]?.toInt();
    hasParking = json["has_parking"];
    instruction = json["instruction"]?.toString();
    isActive = json["isActive"];
    isDeleted = json["isDeleted"];
    addedBy = json["added_by"]?.toInt();
    updatedBy = json["updated_by"]?.toInt();
    createdAt = json["createdAt"]?.toString();
    updatedAt = json["updatedAt"]?.toString();
    restaurantId = json["restaurantId"]?.toString();
    cityId = json["cityId"]?.toString();
    districtId = json["districtId"]?.toString();
    if (json["branches_locales"] != null) {
      final v = json["branches_locales"];
      final arr0 = <DetailsDataBranchesLocales>[];
      v.forEach((v) {
        arr0.add(DetailsDataBranchesLocales.fromJson(v));
      });
      branchesLocales = arr0;
    }
    city =
        (json["city"] != null) ? DetailsDataCity.fromJson(json["city"]) : null;
    district = (json["district"] != null)
        ? DetailsDataDistrict.fromJson(json["district"])
        : null;
    restaurant = (json["restaurant"] != null)
        ? DetailsDataRestaurant.fromJson(json["restaurant"])
        : null;
    branchesSchedule = (json["branches_schedule"] != null)
        ? DetailsDataBranchesSchedule.fromJson(json["branches_schedule"])
        : null;
  }
  Map<String, dynamic> toJson() {
    final Map<String, dynamic> data = Map<String, dynamic>();
    data["id"] = id;
    data["email"] = email;
    data["phone_number"] = phoneNumber;
    data["latitude"] = latitude;
    data["longitude"] = longitude;
    data["photo"] = photo;
    data["country_code"] = countryCode;
    data["status"] = status;
    data["has_parking"] = hasParking;
    data["instruction"] = instruction;
    data["isActive"] = isActive;
    data["isDeleted"] = isDeleted;
    data["added_by"] = addedBy;
    data["updated_by"] = updatedBy;
    data["createdAt"] = createdAt;
    data["updatedAt"] = updatedAt;
    data["restaurantId"] = restaurantId;
    data["cityId"] = cityId;
    data["districtId"] = districtId;
    if (branchesLocales != null) {
      final v = branchesLocales;
      final arr0 = [];
      v!.forEach((v) {
        arr0.add(v!.toJson());
      });
      data["branches_locales"] = arr0;
    }
    if (city != null) {
      data["city"] = city!.toJson();
    }
    if (district != null) {
      data["district"] = district!.toJson();
    }
    if (restaurant != null) {
      data["restaurant"] = restaurant!.toJson();
    }
    if (branchesSchedule != null) {
      data["branches_schedule"] = branchesSchedule!.toJson();
    }
    return data;
  }
}

class Details {
  String? message;
  DetailsData? data;

  Details({
    this.message,
    this.data,
  });
  Details.fromJson(Map<String, dynamic> json) {
    message = json["message"]?.toString();
    data = (json["data"] != null) ? DetailsData.fromJson(json["data"]) : null;
  }
  Map<String, dynamic> toJson() {
    final Map<String, dynamic> data = Map<String, dynamic>();
    data["message"] = message;
    if (data != null) {
      data["data"] = this.data!.toJson();
    }
    return data;
  }
}
 

JSON

 "branches_schedule": {
                "id": "1",
                "sunday": "{"opens_at":"06:00","closes_at":"24:00"}",
                "monday": "{"opens_at":"06:00","closes_at":"24:00"}",
                "tuesday": "{"opens_at":"06:00","closes_at":"24:00"}",
                "wednesday": "{"opens_at":"06:00","closes_at":"24:00"}",
                "thursday": "{"opens_at":"06:00","closes_at":"24:00"}",
                "friday": "{"opens_at":"08:00","closes_at":"22:00"}",
                "saturday": "{"opens_at":"08:00","closes_at":"22:00"}",
                "createdAt": "2021-09-09T13:45:30.656Z",
                "updatedAt": "2021-09-09T13:45:30.656Z",
                "branchId": "10"
            }
 

Дротик

 print(data.data!.branchesSchedule!.sunday!) // How to print 06:00