Selected the wrong code to keep during merge, also updated the log message.

Author: echo-branch

BranchSDK/Branch.h

@@ -576,6 +576,12 @@ extern NSString * __nonnull const BNCSpotlightFeature;
  */
 - (void)useEUEndpoints;
 
+/**
+Sets a custom base URL for all calls to the Branch API.
+@param url  Base URL that the Branch API will use.
+*/
++ (void)setAPIUrl:(NSString *)url;
+
 /**
   @brief        Use the `validateSDKIntegration` method as a debugging aid to assure that you've
                 integrated the Branch SDK correctly.

BranchSDK/Branch.m

@@ -434,6 +434,14 @@ - (void)useEUEndpoints {
     [BNCServerAPI sharedInstance].useEUServers = YES;
 }
 
++ (void)setAPIUrl:(NSString *)url {
+    if ([url hasPrefix:@"http://"] || [url hasPrefix:@"https://"] ){
+        [BNCServerAPI sharedInstance].customAPIURL = url;
+    } else {
+        [[BranchLogger shared] logWarning:(@"Ignoring invalid custom API URL")];
+    }
+}
+
 - (void)validateSDKIntegration {
     [self validateSDKIntegrationCore];
 }