Desearilize graphError

Author: U-FAREAST\ramgupt

src/main/java/com/microsoft/graph/http/GraphError.java

@@ -25,13 +25,16 @@
 import com.google.gson.annotations.SerializedName;
 
 import com.microsoft.graph.core.GraphErrorCodes;
+import com.google.gson.annotations.Expose;
 
 public class GraphError {
 
     @SerializedName("message")
+    @Expose()
     public String message;
 
     @SerializedName("code")
+    @Expose()
     public String code;
 
     @SerializedName("innererror")

src/main/java/com/microsoft/graph/http/GraphErrorResponse.java

@@ -34,6 +34,7 @@ public class GraphErrorResponse implements IJsonBackedObject {
     private AdditionalDataManager additionalDataManager = new AdditionalDataManager(this);
 
     @SerializedName("error")
+    @Expose()
     public GraphError error;
 
     /**