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: test_message_headers.rs
    path of file: ./repos/iggy/integration/tests/examples
    
    the code of the file until where you have to start completion: use super::{parse_sent_message, verify_stdout_contains_expected_logs};
use crate::examples::{IggyExampleTest, Iggy
    
async fn should_successfully_execute() {
    let mut iggy_example_test = IggyExampleTest::new("message-headers");
    iggy_example_test.setup(false).await;

    iggy_example_test
        .execute_test(TestMessageMeaders {
            expected_producer_output: vec![
                "Message headers producer has started, selected transport: tcp",
                "Received an invalid response with status: 1009 (stream_id_not_found).",
                "Stream does not exist, creating...",
                "Messages will be sent to stream: 9999, topic: 1, partition: 1 with interval 1000 ms."
            ],
            expected_consumer_output: vec![
                "Message headers consumer has started, selected transport: tcp",
                "Validating if stream: 9999 exists..",
                "Stream: 9999 was found.",
                "Validating if topic: 1 exists..",
                "Topic: 1 was found.",
                "Messages will be polled by consumer: 1 from stream: 9999, topic: 1, partition: 1 with interval 1000 ms.",
            ]
        })
        .await;
}