Cleaning easyantOption

git-svn-id: https://svn.apache.org/repos/asf/ant/easyant/core/trunk@1587676 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/src/main/java/org/apache/easyant/man/EasyantOption.java b/src/main/java/org/apache/easyant/man/EasyantOption.java
index c23978f..5a67844 100644
--- a/src/main/java/org/apache/easyant/man/EasyantOption.java
+++ b/src/main/java/org/apache/easyant/man/EasyantOption.java
@@ -63,14 +63,8 @@
         super(opt, description);
     }
 
-    public void execute() {
-        if (getProject() == null) {
-            throw new IllegalStateException("project can't be null");
-        }
-        project.log(LINE_SEP + "Project Manual");
-        project.log("--------------");
-    }
-
+    public abstract void execute();
+    
     public Project getProject() {
         return project;
     }