You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: event-topics.rs
    path of file: ./repos/ink/crates/ink/tests/ui/contract/pass
    
    the code of the file until where you have to start completion: #[ink::contract]
mod contract {
    #[ink(storage)]
    pub struct Contract {}

    #[ink(event)]
    pub struct Event0 {}

    #[ink(event)]
    pub struct Event1 {
        #[ink(topic)]
        arg_1: i8,
    }

    #[ink(event)]
    pub struct Event2 {
        #[ink(topic)]
        arg_1: i8,
        #[ink(topic)]
        arg_2: i16,
    }

    #[ink(event)]
    pub struct Event3 {
        #[ink(topic)]
        arg_1: i8,
        #[ink(topic)]
        arg_2: i16,
        #[ink
    
        pub fn message(&self) {
            self.env().emit_event(Event0 {});
            self.env().emit_event(Event1 { arg_1: 1 });
            self.env().emit_event(Event2 { arg_1: 1, arg_2: 2 });
            self.env().emit_event(Event3 {
                arg_1: 1,
                arg_2: 2,
                arg_3: 3,
            });
            self.env().emit_event(Event4 {
                arg_1: 1,
                arg_2: 2,
                arg_3: 3,
                arg_4: 4,
            });
            self.env().emit_event(Event5 {
                arg_1: 1,
                arg_2: 2,
                arg_3: 3,
                arg_4: 4,
                arg_5: 5,
            });
        }