added comment

Author: asmyasnikov

CHANGELOG.md

@@ -1,6 +1,6 @@
 * Removed check the node is available for query and table service sessions 
 * Refactored the `balancers.PreferLocations()` function - it is a clean/pure function
-* Added `balancers.WithNodeID()` context modifier for define per request the YDB endpoint by NodeID
+* Added experimental `balancers.WithNodeID()` context modifier for define per request the YDB endpoint by NodeID
 
 ## v3.74.2
 * Added description to scan errors with use query service client scanner

balancers/context.go

@@ -6,6 +6,9 @@ import (
 	"github.com/ydb-platform/ydb-go-sdk/v3/internal/endpoint"
 )
 
+// WithNodeID returns the copy of context with NodeID which the client balancer will prefer on step of choose YDB endpoint step
+//
+// Experimental: https://github.com/ydb-platform/ydb-go-sdk/blob/master/VERSIONING.md#experimental
 func WithNodeID(ctx context.Context, nodeID uint32) context.Context {
 	return endpoint.WithNodeID(ctx, nodeID)
 }