Splitting a method is most easily done by selecting the method in the call tree view and invoking Split method with a Script from the context or "View" menu.
In the script editor, you can then enter a script whose return value or type
java.lang.String will be used for splitting the call tree. Splitting nodes in the call tree show
that string value and have a special icon.
You can temporarily disable a splitting script by deselecting the check box in front of the script configuration.
Please note that call tree splitting scripts that create a different splitting string for each invocation can create a lot of overhead.
The context menu for the list of methods offers the option to edit existing entries.