callClassMethod(node, method, ...args) {
			const inst = this.findClassInstance(node);

			if (typeof(inst?.[method]) != 'function')
				return null;

			return inst[method].call(inst, ...args);
		}
Finds a bound class instance on the given node itself or the
first bound instance on its closest parent node and invokes
the specified method name on the found class instance.

@instance
@memberof LuCI.dom
@param {Node} node
The DOM `Node` instance to start from.

@param {string} method
The name of the method to invoke on the found class instance.

@param {...*} params
Additional arguments to pass to the invoked method as-is.

@returns {*|null}
Returns the return value of the invoked method if a class
instance and method has been found. Returns `null` if either
no bound class instance could be found, or if the found
instance didn't have the requested `method`.