    """A function model represents the model of a Ceylon function that you can invoke and inspect.

       A function is a toplevel binding, declared on a package.

       This is a [[FunctionModel]] that you can also invoke:

           shared String foo(String name) => "Hello "+name;

           void test(){
               Function<String,[String]> f = `foo`;
               // This will print: Hello Stef
               print(f("Stef"));
           }
     """
    shared interface Function<out Type=Anything, in Arguments=Nothing>
            satisfies FunctionModel<Type, Arguments> & Callable<Type, Arguments>
            given Arguments satisfies Anything[] {

        "Type-unsafe function application, to be used when the argument types are unknown until runtime.

         This has the same behaviour as invoking this `Function` directly, but exchanges compile-time type
         safety with runtime checks."
        throws(`class IncompatibleTypeException`, "If any argument is not assignable to this function's corresponding parameter")
        throws(`class InvocationException`, "If there are not enough or too many provided arguments")
        shared formal Type apply(Anything* arguments);
    }