GroupClassModel

GroupClassModel.h

//
//  GroupClassModel.h
//  GCM
//
//  Created by Paul Wilkinson on 13/10/17.

#import <Foundation/Foundation.h>
@interface GroupClassModel: NSObject

@property (strong, nonatomic) NSString *id;

-(NSArray<NSString *> *)names;
-(void)addName:(NSString *)name;

@end
@end

GroupClassModel.m

//
//  GroupClassModel.m
//  GCM
//
//  Created by Paul Wilkinson on 13/10/17.
//

#import "GroupClassModel.h"

@interface GroupClassModel ()

@property (strong, nonatomic) NSMutableArray<NSString *> *groupNames;

@end

@implementation GroupClassModel

-(instancetype) init:(NSString *)id  {
    
    if (self = [super init]) {
        self.id =id;
        self.groupNames = [NSMutableArray<NSString *> new];
    }
    return self;
    
}

-(void) addName:(NSString *) name {
    
    [self.groupNames addObject: name];
    
}

-(NSArray<NSString *> *)names {
    return [self.groupNames copy];
}

@end