How to add interfacename to a classes implements list?

Hi

I want automatically using PIS to add a class to a classes implements list.

I have some code like:

But the code adds the entire javaclass as text:

Example (adding java.io.Serializable)

So how do I just add the 'Serializable' to the implements list of a class????????

I want the end result to be like

I have looked the javadoc API but no methods jumps my face with a method like:

etc.


/Claus