add whitespace for getting a diff from master run

Author: zengin

src/main/java/com/microsoft/graph/models/extensions/IGraphServiceClient.java

@@ -18,6 +18,8 @@
 
 // **NOTE** This file was generated by a tool and any changes will be overwritten.
 
+
+
 /**
  * The interface for the Graph Service Client.
  */