REST/MVC Product Controller

REST/MVC Path for Product definition
HTTP Method	Path	Description	Controller Method
	*/rest/products/{productKey}*	Retrieves product by product key	getProduct(productKey: String)
	Parameters: *productKey:* Product primary key (Path parameter)
	/rest/products/	Adds a new product	addProduct(product: ProductDTO)
	Parameters: *product:* Product json (Body)
	/rest/products/{productKey}	Updates an existent product	updateProduct(product: ProductDTO, productKey: String)
	Parameters: *product:* Product json (Body) *productKey:* Product primary key (Path parameter)
	/rest/products/{productKey}	Removes an existent product	removeProduct(productKey: String)
	Parameters: *productKey:* Product primary key (Path parameter)
	/rest/products/{productKey}/changeVisibility	Changes product visibility	changeVisibility(productKey: String, visible: boolean)
	Parameters: *productKey:* Productprimary key (Path parameter) *visible:* Indicates if product must be visible or not (Body param)
	/rest/products/	Search for products by criteria	findProductsByCriteria(criteria: ProductCriteria)
	Parameters: *criteria:* Criteria filter json (Body parameter)