public B toolBarGroup(String group, String subGroup) {
		toolBarGroup = group;
		toolBarSubGroup = subGroup;
		return self();
	}
Sets the group and sub-group for the action in the tool 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.

<p><b>Note: you must call {@link #toolBarIcon(Icon)} or {@link #toolBarIcon(String)} for
this action to appear in the toolbar.  Calling this method without the other will not 
cause this action to be placed in the tool bar.
</b>

@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 #toolBarGroup(String)
Ghidra/Framework/Docking/src/main/java/docking/action/builder/AbstractActionBuilder.java