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src/main/java/it/auties/whatsapp/model/message/standard/PinInChatMessage.java

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+package it.auties.whatsapp.model.message.standard;
+
+import it.auties.protobuf.annotation.ProtobufMessageName;
+import it.auties.protobuf.annotation.ProtobufProperty;
+import it.auties.protobuf.model.ProtobufEnum;
+import it.auties.protobuf.model.ProtobufType;
+import it.auties.whatsapp.model.message.model.*;
+
+
+@ProtobufMessageName("Message.PinInChatMessage")
+public record PinInChatMessage(
+        @ProtobufProperty(index = 1, type = ProtobufType.OBJECT)
+        ChatMessageKey key,
+        @ProtobufProperty(index = 2, type = ProtobufType.OBJECT)
+        Type pinType,
+        @ProtobufProperty(index = 3, type = ProtobufType.INT64)
+        long senderTimestampMilliseconds
+) implements Message {
+    @Override
+    public MessageType type() { return MessageType.PIN_IN_CHAT; }
+
+    @Override
+    public MessageCategory category() { return MessageCategory.STANDARD; }
+
+    @ProtobufMessageName("Message.PinInChatMessage.Type")
+    public enum Type implements ProtobufEnum {
+        UNKNOWN_TYPE(0),
+        PIN_FOR_ALL(1),
+        UNPIN_FOR_ALL(2);
+
+        final int index;
+
+        Type(int index) { this.index = index; }
+
+        public int index() { return index; }
+    }
+}