public static string        file_Create_Random_File(this API_NGit nGit)
        {
            var fileName    = "name".add_RandomLetters().add(".txt");
            var fileContent = "content".add_RandomLetters();

            nGit.file_Write(fileName, fileContent);
            return(fileName);
        }
 public static API_NGit      file_Create(this API_NGit nGit, string virtualFileName, string fileContents)
 {
     return(nGit.file_Write(virtualFileName, fileContents));
 }