MethodSwizzling.m

+ (void)load {
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        NSError *error;
        BOOL result = [[self class] jr_swizzleMethod:@selector(text) withMethod:@selector(swizzleName) error:&error];
        if (!result || error) {
            NSLog(@"Can't swizzle methods - %@", [error description]);
        }
    });
}

- (NSString *)swizzleName {
    return @"StubName";
}