AbstractConfigurationElementEditor cannot find TeamForgePage

Hi,
I'm attempting to extend Build.
I created a
ZBuildConfigurationEditorFactory implements IConfigurationElementEditorFactory

and

public class ZBuildConfigurationElementEditor extends
AbstractConfigurationElementEditor {
following the forum and rtc doc that are available.

The issue is that it cannot locate com.ibm.team.ui.editor.TeamFormPage which AbstractConfigurationElementEditor is based on.

In my plug-in dependencies there is no selection listed for com.ibm.team.ui so I cannot add it. Where is com.ibm.team.ui suppose to be and how can I get ti to appear in my dependency list so the code can use it and resolve the problem?

Regards, Steve