boolean isExpanded(GroupPath gp) {
		TreePath path = getTreePathFromGroup(gp);
		if (path != null) {
			return isExpanded(path);
		}
		return false;
	}
Return true if the given group path is expanded.
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/programtree/ProgramDnDTree.java