gistfile1.txt

public interace IAgentRepository
{
  Task Register(Agent agent);
}

public class AgentRepository : DatabaseRepository, IAgentRepository
{
    // NO WARNING
    public async Task Register(Agent agent)
    {
    // valid code here
    }
    
    // Warning: Naming rule violation: Missing suffix: 'Async'
    public async Task<bool> Foob() => await Task.FromResult(false);
}