Assert mutual exclusion of authTokenProvider and oauth2AccessToken

1 files changed, 3 insertions, 3 deletions

diff --git a/src/objective-c/GRPCClient/GRPCCallOptions.h b/src/objective-c/GRPCClient/GRPCCallOptions.h
index 4c8bb605ea..27834b2008 100644
--- a/src/objective-c/GRPCClient/GRPCCallOptions.h
+++ b/src/objective-c/GRPCClient/GRPCCallOptions.h
@@ -91,8 +91,8 @@ typedef NS_ENUM(NSInteger, GRPCTransportType) {
 
 /**
  * The OAuth2 access token string. The string is prefixed with "Bearer " then used as value of the
- * request's "authorization" header field. This parameter takes precedence over \a
- * oauth2AccessToken.
+ * request's "authorization" header field. This parameter should not be used simultaneously with
+ * \a authTokenProvider.
  */
 @property(copy, readonly) NSString *oauth2AccessToken;
 
@@ -245,7 +245,7 @@ typedef NS_ENUM(NSInteger, GRPCTransportType) {
 
 /**
  * The interface to get the OAuth2 access token string. gRPC will attempt to acquire token when
- * initiating the call. This parameter takes precedence over \a oauth2AccessToken.
+ * initiating the call. This parameter should not be used simultaneously with \a oauth2AccessToken.
  */
 @property(readwrite) id<GRPCAuthorizationProtocol> authTokenProvider;