package private useS2A.

Author: rmehta19

gax-java/gax/src/main/java/com/google/api/gax/rpc/EndpointContext.java

@@ -104,7 +104,7 @@ public static EndpointContext getDefaultInstance() {
   @Nullable
   public abstract String transportChannelProviderEndpoint();
 
-  public abstract boolean useS2A();
+  abstract boolean useS2A();
 
   @Nullable
   abstract EnvironmentProvider envProvider();