public B toolBarGroup(String group) {
		toolBarGroup = group;
		return self();
	}
Sets the 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.

<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 for this action
@return this builder (for chaining)
@see #toolBarGroup(String, String)
Ghidra/Framework/Docking/src/main/java/docking/action/builder/AbstractActionBuilder.java