OCP-1

 public class MailChimpReportsOverview
    {
        BaseOperation basicOperation = new BaseOperation(); 

        public async Task<ReportOverview> GetOverviewAsync()
        {
            //Generating endpoint 
            string endpoint = Authenticate.EndPointBuilder(TargetTypes.reports, SubTargetType.not_applicable, SubTargetType.not_applicable);
            
            return await basicOperation.GetAsync<ReportOverview>(endpoint);
        }
    }