@Override
	public boolean isExpanded() {
		FcgLevel level = vertex.getLevel();
		FcgDirection direction = level.getDirection();
		if (direction.isSource()) {
			return isIncomingExpanded() && isOutgoingExpanded();
		}
		if (direction.isIn()) {
			return isIncomingExpanded();
		}
		return isOutgoingExpanded();
	}
Returns whether this vertex is fully expanded in its current direction
@return whether this vertex is fully expanded in its current direction
Ghidra/Features/GraphFunctionCalls/src/main/java/functioncalls/graph/FcgVertexShapeProvider.java