Function run_query 

fn run_query(
    payload: Value,
    client: &impl HttpFetcher,
    fetch_options: &FetchOptions,
) -> Result<String, QueryError>

Runs a query against the GitLab API and returns the response as a string. Parsing the response is up to the caller. If there is an error, the function returns a QueryError.

Parameter

payload: A valid GraphQL JSON payload client: The HTTP client, usually reqwest::Client fetch_options: The options specified by the user