code: def is_nsfw():
      
      def pred(ctx):
          ch = ctx.channel
          if ctx.guild is None or (isinstance(ch, discord.TextChannel) and ch.is_nsfw()):
              return True
          raise NSFWChannelRequired(ch)
      return check(pred)
docs: A :func:`.check` that checks if the channel is a NSFW channel.
  
      This check raises a special exception, :exc:`.NSFWChannelRequired`
      that is derived from :exc:`.CheckFailure`.
  
      .. versionchanged:: 1.1.0
  
          Raise :exc:`.NSFWChannelRequired instead of generic :exc:`.CheckFailure`.
          DM channels will also now pass this check.