How to use the @projectstorm/react-canvas-core.Toolkit.closest function in @projectstorm/react-canvas-core

getMouseElement(event: MouseEvent): BaseModel {
		var target = event.target as Element;
		var diagramModel = this.model;

		//is it a port
		var element = Toolkit.closest(target, '.port[data-name]');
		if (element) {
			var nodeElement = Toolkit.closest(target, '.node[data-nodeid]') as HTMLElement;
			return diagramModel.getNode(nodeElement.getAttribute('data-nodeid')).getPort(element.getAttribute('data-name'));
		}

		//look for a point
		element = Toolkit.closest(target, '.point[data-id]');
		if (element) {
			return diagramModel.getLink(element.getAttribute('data-linkid')).getPointModel(element.getAttribute('data-id'));
		}

		//look for a link
		element = Toolkit.closest(target, '[data-linkid]');
		if (element) {
			return diagramModel.getLink(element.getAttribute('data-linkid'));
		}

}

		//look for a point
		element = Toolkit.closest(target, '.point[data-id]');
		if (element) {
			return diagramModel.getLink(element.getAttribute('data-linkid')).getPointModel(element.getAttribute('data-id'));
		}

		//look for a link
		element = Toolkit.closest(target, '[data-linkid]');
		if (element) {
			return diagramModel.getLink(element.getAttribute('data-linkid'));
		}

		//look for a node
		element = Toolkit.closest(target, '.node[data-nodeid]');
		if (element) {
			return diagramModel.getNode(element.getAttribute('data-nodeid'));
		}

		return null;
	}

getMouseElement(event: MouseEvent): BaseModel {
		var target = event.target as Element;
		var diagramModel = this.model;

		//is it a port
		var element = Toolkit.closest(target, '.port[data-name]');
		if (element) {
			var nodeElement = Toolkit.closest(target, '.node[data-nodeid]') as HTMLElement;
			return diagramModel.getNode(nodeElement.getAttribute('data-nodeid')).getPort(element.getAttribute('data-name'));
		}

		//look for a point
		element = Toolkit.closest(target, '.point[data-id]');
		if (element) {
			return diagramModel.getLink(element.getAttribute('data-linkid')).getPointModel(element.getAttribute('data-id'));
		}

		//look for a link
		element = Toolkit.closest(target, '[data-linkid]');
		if (element) {
			return diagramModel.getLink(element.getAttribute('data-linkid'));
		}

		//look for a node
		element = Toolkit.closest(target, '.node[data-nodeid]');
		if (element) {
			return diagramModel.getNode(element.getAttribute('data-nodeid'));
		}

getMouseElement(event: MouseEvent): BaseModel {
		var target = event.target as Element;
		var diagramModel = this.model;

		//is it a port
		var element = Toolkit.closest(target, '.port[data-name]');
		if (element) {
			var nodeElement = Toolkit.closest(target, '.node[data-nodeid]') as HTMLElement;
			return diagramModel.getNode(nodeElement.getAttribute('data-nodeid')).getPort(element.getAttribute('data-name'));
		}

		//look for a point
		element = Toolkit.closest(target, '.point[data-id]');
		if (element) {
			return diagramModel.getLink(element.getAttribute('data-linkid')).getPointModel(element.getAttribute('data-id'));
		}

		//look for a link
		element = Toolkit.closest(target, '[data-linkid]');
		if (element) {
			return diagramModel.getLink(element.getAttribute('data-linkid'));
		}

		//look for a node

//is it a port
		var element = Toolkit.closest(target, '.port[data-name]');
		if (element) {
			var nodeElement = Toolkit.closest(target, '.node[data-nodeid]') as HTMLElement;
			return diagramModel.getNode(nodeElement.getAttribute('data-nodeid')).getPort(element.getAttribute('data-name'));
		}

		//look for a point
		element = Toolkit.closest(target, '.point[data-id]');
		if (element) {
			return diagramModel.getLink(element.getAttribute('data-linkid')).getPointModel(element.getAttribute('data-id'));
		}

		//look for a link
		element = Toolkit.closest(target, '[data-linkid]');
		if (element) {
			return diagramModel.getLink(element.getAttribute('data-linkid'));
		}

		//look for a node
		element = Toolkit.closest(target, '.node[data-nodeid]');
		if (element) {
			return diagramModel.getNode(element.getAttribute('data-nodeid'));
		}

		return null;
	}