Method assertNotEmpty

src/main/java/graphql/Assert.java:118–123

(Collection<T> collection)

    }

    public static <T> Collection<T> assertNotEmpty(Collection<T> collection) {
        if (collection == null || collection.isEmpty()) {
            throwAssert("collection must be not null and not empty");
        }
        return collection;
    }

    //    @Contract("null,_-> fail")
    public static <T> Collection<T> assertNotEmpty(Collection<T> collection, Supplier<String> msg) {