Method clone

libchigraph/src/GraphModule.cpp:386–389

	nlohmann::json            toJSON() const override { return {}; }
	std::unique_ptr<NodeType> clone() const override {
		Result res = {};  // there shouldn't be an error but check anyways
		return std::make_unique<GraphFuncCallType>(*JModule, name(), &res);
	}

	GraphModule* JModule;
};