method Context.prototype.getChatMemberimport { Context } from "https://deno.land/x/grammy@v1.10.1/context.ts"; getChatMember(user_id: number, signal?: AbortSignal)Context-aware alias for api.getChatMember. Use this method to get information about a member of a chat. Returns a ChatMember object on success. Parametersuser_id: numberUnique identifier of the target user optionalsignal: AbortSignalOptional AbortSignal to cancel the request Official reference: https://core.telegram.org/bots/api#getchatmember