You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: XcodeHash.m
    path of file: ./repos/InjectionIII/InjectionIII
    
    the code of the file until where you have to start completion: //
//  XcodeHash.m
//  Refactorator
//
//  Created by John Holdsworth on 19/11/2016.
//

#import "Xcod
    
function is used to swap byte ordering of a 64bit integer
static uint64_t swap_uint64(uint64_t val) {
    val = ((val << 8) & 0xFF00FF00FF00FF00ULL ) | ((val >> 8) & 0x00FF00FF00FF00FFULL );
    val = ((val << 16) & 0xFFFF0000FFFF0000ULL ) | ((val >> 16) & 0x0000FFFF0000FFFFULL );
    return (val << 32) | (val >> 32);
}

/*!
 @method hashStringForPath

 Create the unique identifier string for a Xcode project path

 @param path (input) string path to the ".xcodeproj" or ".xcworkspace" file

 @result NSString* of the identifier
 */
+ (NSString *)hashStringForPath:(NSString *)path;
{
    // using uint64_t[2] for ease of use, since it is the same size as char[CC_MD5_DIGEST_LENGTH]
    uint64_t digest[CC_MD2_DIGEST_LENGTH] = {0};

    // char array that will contain the identifier
    unsigned char resultStr[28] = {0};

    // setup md5 context
    CC_MD5_CTX md5;
    CC_MD5_Init(&md5);

    // get the UTF8 string of the path
    const char *c_path = [path UTF8String];

    // get length of the path string
    unsigned long length = strlen(c_path);

    // update the md5 context with the full path string
    CC_MD5_Update (&md5, c_path, (CC_LONG)length);

    // finalize working with the md5 context and store into the digest
    CC_MD5_Final ( (unsigned char *)digest, &md5);

    // take the first 8 bytes of the digest and swap byte order
    uint64_t startValue = swap_uint64(digest[0]);

    // for indexes 13->0
    int index = 13;
    do {
        // take 'startValue' mod 26 (restrict to alphabetic) and add based 'a'
        resultStr[index] = (char)((startValue % 26) + 'a');

        // divide 'startValue' by 26
        startValue /= 26;

        index--;
    } while (index >= 0);

    // The second loop, this time using the last 8 bytes
    // repeating the same process as before but over indexes 27->14
    startValue = swap_uint64(digest[1]);
    index = 27;
    do {
        resultStr[index] = (char)((startValue % 26) + 'a');
        startValue /= 26;
        index--;
    } while (index > 13);

    //return [[NSString alloc] initWithString:@"agyjsqofsyrdwafqcrbciitvnmmj"];
    // create a new string from the 'resultStr' char array and return
    return [[NSString alloc] initWithBytes:resultStr length:28 encoding:NSUTF8StringEncoding];
}

@end