Intellij IDEA-Grails GDSL Not Working

I tried to use GDSL Scripts for my grails project in IDEA.
I tried things as shown in the Guide: GDSL Guide
The Steps I followed were:

1. Created a myDef.gdsl file in my project home(i.e. in the folder
   that containg grails-app, web-app etc)

2. In that file i added this code:

   def ctx2 = context(ctype: "com.myPackage.MyClass")
   
   contributor(ctx2) {
       method(name: 'withLock', type: 'void', params: [closure: { }])
   }
   

3. Clicked on Activate.

But it still does not show any autocomplete or recognise when i do:

Myclass m = new MyClass()
m.withLock() //This is not recognised

Anything i am doing wrong??? :(
Details:

• Idea Version: 107.535

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