IOS How to convert date to format YYYYMMDD

+ (NSString*)convertDateToYYYYMMDD:(NSDate *)_date{
    NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init];
    [dateFormat setDateFormat:@"yyyyMMdd"];
    [dateFormat setLocale:[[NSLocale alloc] initWithLocaleIdentifier:@"en_US"]];
    [dateFormat setTimeZone:[NSTimeZone timeZoneWithAbbreviation:@"UTC"]];
    NSString *date = [dateFormat stringFromDate:_date];
  
    return  date;
  
}

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