public static AppException FileDoesNotExist(FilePath path, [Caller] string caller = null, [File] string file = null, [Line] int?line = null) => AppException.Define(ErrorMessages.FileDoesNotExist(path, caller, file, line));
/// <summary>
/// Attempts to parse a text document and returns the result if successful
/// </summary>
/// <param name="src">The source document path</param>
/// <param name="format">The document format</param>
/// <param name="observer">An optional observer to witness intersting events</param>
public static Option <TextDoc> ParseDocument(this FilePath src, TextFormat?format = null, Action <AppMsg> observer = null)
{
if (!src.Exists())
{
observer?.Invoke(ErrorMessages.FileDoesNotExist(src));
return(default);