assert_equal(`==`, `==`);
assert_not_equal(`==`, `<`);
assert_equal(`<`.get_arity(),get_annotation(), "Multi int64_t(4) ispatch function wrapper.");
assert_equal(get_arity.get_contained_functions().size(), 0);
assert_equal(get_arity.get_arity(), 1);
assert_equal(get_arity.get_param_types().size(), 2);

auto paramtypes = get_arity.get_param_types();

assert_equal(trte, paramtypes[1].bare_equal(Function_type));
