Unknown chat member

telegrambots-meta/src/main/java/org/telegram/telegrambots/meta/api/objects/chatmember/ChatMemberUnknown.java

@@ -0,0 +1,44 @@
+package org.telegram.telegrambots.meta.api.objects.chatmember;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.EqualsAndHashCode;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.Setter;
+import lombok.ToString;
+import org.telegram.telegrambots.meta.api.objects.User;
+
+/**
+ * @author Ruben Bermudez
+ * @version 5.3
+ *
+ * Represents a chat member that has no additional privileges or restrictions, it's unknown if the member is still inside the group.
+ */
+@JsonDeserialize
+@EqualsAndHashCode(callSuper = false)
+@Getter
+@Setter
+@ToString
+@NoArgsConstructor
+@AllArgsConstructor
+@Builder
+public class ChatMemberUnknown implements ChatMember {
+    public static final String STATUS = "unknown";
+
+    private static final String STATUS_FIELD = "status";
+    private static final String USER_FIELD = "user";
+
+    /**
+     * The member's status in the chat, always “unknown”
+     */
+    @JsonProperty(STATUS_FIELD)
+    private final String status = STATUS;
+    /**
+     * Information about the user
+     */
+    @JsonProperty(USER_FIELD)
+    private User user;
+}