增加 AfterBehavior 枚举，用于后续流程的判断。

Apewer/AfterBehavior.cs

@@ -0,0 +1,20 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace Apewer
+{
+
+    /// <summary>后续动作。</summary>
+    public enum AfterBehavior : int
+    {
+
+        /// <summary>打断。</summary>
+        Break = 0,
+
+        /// <summary>继续。</summary>
+        Continue = 1
+
+    }
+
+}