Returns unique emoji that correspond to stickers to be found by the getStickers(sticker_type, query, 1000000, chat_id)
| sticker_type |
Type of the stickers to search for |
| query |
Search query |
| chat_id |
Chat identifier for which to find stickers |
| return_only_main_emoji |
Pass true if only main emoji for each found sticker must be included in the result |