code: public void create(final DbProduct dbProduct) {
          if(repositoryHandler.getProduct(dbProduct.getName()) != null){
              throw new WebApplicationException(Response.status(Response.Status.CONFLICT).entity("Product already exist!").build());
          }
  
          repositoryHandler.store(dbProduct);
      }
docs: Creates a new Product in Grapes database
  
  @param dbProduct DbProduct