internal static Task LogProcessEndMessage(this IBuildEngine be, String process, DateTime startTime) => be.LogMessageOrWriteToConsoleOut($"Process { process } exited, duration { ( DateTime.UtcNow - startTime ).ToString( "c" ) }.");
internal static Task LogProcessInvocationMessage(this IBuildEngine be, String process) => be.LogMessageOrWriteToConsoleOut($"Invoking process { process }.");