[Pharo-dev] I wanted to understand new list

[Stéphane Ducasse]

And 

NewListExample new
        withNewList;
        openInWindow.

does not work.

separatorAfter: item at: index

        ^ separatorSelector
                ifNotNil: [ self model perform: separatorSelector with: item 
with: index ]

separatorSelector
        is a valueHolder and not a symbol

but I do not get it because 


separatorSelector
        ^ separatorSelector contents

separatorSelector: anObject
        separatorSelector contents: anObject

really looks like a valueHolder.

Stef