// Creates a new tag type on the file if needed, depending on the input file type. Returns true if a new tag was created. The out variable usedTagType is set to the tag that should be used
public static bool CreateTagIfRequired(TagLib.File file, out TagTypes usedTagType)
{
usedTagType = TagTypes.None;
if (!PREFERRED_TAGTYPES.TryGetValue(file.GetType(), out TagTypes[] tagTypes))
