fix degrade of duplicate method selection

Author: neuecc

src/MicroBatchFramework/BatchEngine.cs

@@ -65,10 +65,10 @@ public async Task RunAsync(Type type, string[] args)
  {
  if (args.Length > 0 && command.EqualsAny(args[0]))
  {
- // command alias is first priority(if duplicate with MethodName([Command("run")]Run()), okay to execute.
+ // command's priority is first
  method = item;
  argsOffset = 1;
- continue;
+ goto RUN;
  }
  else
  {
@@ -82,10 +82,10 @@ public async Task RunAsync(Type type, string[] args)
  {
  if (method != null)
  {
- await SetFailAsync(ctx, "Found duplicate method/command name, name or alias only allows unique name. Type:" + type.FullName + " Method:" + method.Name + " and " + item.Name);
+ await SetFailAsync(ctx, "Found two public methods(wihtout command). Type:" + type.FullName + " Method:" + method.Name + " and " + item.Name);
  return;
  }
- method = item;
+ method = item; // found single public(non-command) method.
  }
  }