Add is_from_offline field to Message

Author: anfanik

library/src/main/java/com/pengrad/telegrambot/model/Message.java

@@ -34,6 +34,7 @@ public class Message extends MaybeInaccessibleMessage implements Serializable {
     private User via_bot;
     private Integer edit_date;
     private Boolean has_protected_content;
+    private Boolean is_from_offline;
     private Boolean has_media_spoiler;
     private String media_group_id;
     private String author_signature;
@@ -227,11 +228,15 @@ public Integer editDate() {
     }
 
     public Boolean hasProtectedContent() {
-        return has_protected_content;
+        return has_protected_content != null && has_protected_content;
+    }
+
+    public Boolean isFromOffline() {
+        return is_from_offline != null && is_from_offline;
     }
 
     public Boolean hasMediaSpoiler() {
-        return has_media_spoiler;
+        return has_media_spoiler != null && has_media_spoiler;
     }
 
 
@@ -507,6 +512,7 @@ public boolean equals(Object o) {
                 Objects.equals(via_bot, message.via_bot) &&
                 Objects.equals(edit_date, message.edit_date) &&
                 Objects.equals(has_protected_content, message.has_protected_content) &&
+                Objects.equals(is_from_offline, message.is_from_offline) &&
                 Objects.equals(has_media_spoiler, message.has_media_spoiler) &&
                 Objects.equals(media_group_id, message.media_group_id) &&
                 Objects.equals(author_signature, message.author_signature) &&
@@ -593,6 +599,7 @@ public String toString() {
                 ", via_bot=" + via_bot +
                 ", edit_date=" + edit_date +
                 ", has_protected_content=" + has_protected_content+
+                ", is_from_offline=" + is_from_offline +
                 ", has_media_spoiler=" + has_media_spoiler+
                 ", media_group_id='" + media_group_id + '\'' +
                 ", author_signature='" + author_signature + '\'' +