Make response fields private + avoid false positive unused warnings

src/main/java/com/filestack/internal/responses/CloudAuthHolder.java

@@ -2,6 +2,7 @@
 
 import com.google.gson.annotations.SerializedName;
 
+@SuppressWarnings("unused")
 public class CloudAuthHolder {
   @SerializedName("redirect_url") private String redirectUrl;
 

src/main/java/com/filestack/internal/responses/CloudStoreResponse.java

@@ -1,5 +1,6 @@
 package com.filestack.internal.responses;
 
+@SuppressWarnings("unused")
 public class CloudStoreResponse {
   private String url;
   private String handle;

src/main/java/com/filestack/internal/responses/CompleteResponse.java

@@ -1,6 +1,7 @@
 package com.filestack.internal.responses;
 
 /** Response from multipart complete endpoint. */
+@SuppressWarnings("unused")
 public class CompleteResponse {
   private String url;
   private String handle;

src/main/java/com/filestack/internal/responses/ImageTagResponse.java

@@ -7,8 +7,9 @@
  *
  * @see <a href="https://www.filestack.com/docs/tagging"></a>
  */
+@SuppressWarnings("unused")
 public class ImageTagResponse {
-  Tags tags;
+  private Tags tags;
 
   class Tags {
     Map<String, Integer> auto;

src/main/java/com/filestack/internal/responses/StoreResponse.java

@@ -1,17 +1,18 @@
 package com.filestack.internal.responses;
 
 /** Response object from transform store endpoint. */
+@SuppressWarnings("unused")
 public class StoreResponse {
-  String url;
-  String filename;
-  String type;
+  private String url;
+  private String filename;
+  private String type;
 
-  String container;
-  String key;
+  private String container;
+  private String key;
 
-  int width;
-  int height;
-  int size;
+  private int width;
+  private int height;
+  private int size;
 
   public String getUrl() {
     return url;

src/main/java/com/filestack/internal/responses/UploadResponse.java

@@ -7,6 +7,7 @@
 import java.util.Map;
 
 /** Response object from multipart upload endpoint. */
+@SuppressWarnings("unused")
 public class UploadResponse {
   private String url;
   @SerializedName("location_url")