public B menuGroup(String group, String subGroup) {
		menuGroup = group;
		menuSubGroup = subGroup;
		return self();
	}
Sets the group and sub-group for the action in the menu bar.  Actions in the same group 
will appear next to other actions in the same group and actions in different groups will 
be separated by menu dividers.  The sub-group is used to order the actions within the group.

@param group the group used to clump actions together
@param subGroup the sub-group used to order actions within a group
@return this builder (for chaining)
@see #menuGroup(String)
Ghidra/Framework/Docking/src/main/java/docking/action/builder/AbstractActionBuilder.java