//
//	User-Agent:
//
//	    This is ignored from signing because signing this causes problems with generating pre-signed URLs
//	    (that are executed by other agents) or when customers pass requests through proxies, which may
//	    modify the user-agent.
//
//	Authorization:
//
//	    Is skipped for obvious reasons
var ignoredHeaders = map[string]bool{

		return nil, osErrToFileErr(err)
	}

	w, err := OpenFile(filePath, mode, 0o666)
	if err != nil {
		// File path cannot be verified since one of the parents is a file.
		switch {
		case isSysErrIsDir(err):
			return nil, errIsNotRegular
		case osIsPermission(err):
			return nil, errFileAccessDenied
		case isSysErrNotDir(err):

    kCFTaggedObjectID_Atom = (0 << 1) + 1,
    kCFTaggedObjectID_Undefined3 = (1 << 1) + 1,
    kCFTaggedObjectID_Undefined2 = (2 << 1) + 1,
    kCFTaggedObjectID_Integer = (3 << 1) + 1,
    kCFTaggedObjectID_DateTS = (4 << 1) + 1,
    kCFTaggedObjectID_ManagedObjectID = (5 << 1) + 1, // Core Data
    kCFTaggedObjectID_Date = (6 << 1) + 1,
    kCFTaggedObjectID_Undefined7 = (7 << 1) + 1,
};
*/