@@ -1,9 +1,12 @@
+using System;
 using System.Threading.Tasks;
 
 namespace Datadog.Trace.Agent
 {
     internal interface IApi
     {
+        public void OverrideBaseEndpoint(Uri baseEndpoint);
+
         Task<bool> SendTracesAsync(Span[][] traces);
     }
 }
using System.Threading.Tasks;

namespace Datadog.Trace.Agent
{
    internal interface IApi
    {
        Task<bool> SendTracesAsync(Span[][] traces);
    }
}

Consider renaming to `SetBaseEndpoint()`.