Add doc comments for event methods

src/TgBotLib/Events/ChatBoostEvent.php

@@ -16,6 +16,9 @@
             return EventType::CHAT_BOOST_EVENT;
         }
 
+        /**
+         * @return ChatBoostUpdated The updated chat boost information.
+         */
         protected function getChatBoost(): ChatBoostUpdated
         {
             return $this->update->getChatBoost();

src/TgBotLib/Events/ChatJoinRequestEvent.php

@@ -14,6 +14,11 @@
             return EventType::CHAT_JOIN_REQUEST_EVENT;
         }
 
+        /**
+         * Retrieves the chat join request from the update.
+         *
+         * @return ChatJoinRequest The chat join request data.
+         */
         protected function getChatJoinRequest(): ChatJoinRequest
         {
             return $this->update->getChatJoinRequest();

src/TgBotLib/Events/RemovedChatBoostEvent.php

@@ -17,7 +17,9 @@
         }
 
         /**
-         * @return ChatBoostRemoved The object representing the removed chat boost.
+         * Retrieves the removed chat boost from the update.
+         *
+         * @return ChatBoostRemoved The chat boost that was removed.
          */
         protected function getChatBoostRemoved(): ChatBoostRemoved
         {