code: async def send_help(self, *args):
          
          from .core import Group, Command
  
          bot = self.bot
          cmd = bot.help_command
  
          if cmd is None:
              return None
  
          cmd = cmd.copy()
          cmd.context = self
          if len(args) == 0:
              await cmd.prepare_help_command(self, None)
              mapping = cmd.get_bot_mapping()
              return await cmd.send_bot_help(mapping)
  
          entity = args[0]
          if entity is None:
              return None
  
          if isinstance(entity, str):
              entity = bot.get_cog(entity) or bot.get_command(entity)
  
          try:
              qualified_name = entity.qualified_name
          except AttributeError:
              # if we're here then it's not a cog, group, or command.
              return None
  
          await cmd.prepare_help_command(self, entity.qualified_name)
  
          if hasattr(entity, '__cog_commands__'):
              return await cmd.send_cog_help(entity)
          elif isinstance(entity, Group):
              return await cmd.send_group_help(entity)
          elif isinstance(entity, Command):
              return await cmd.send_command_help(entity)
          else:
              return None
docs: send_help(entity=<bot>)
  
          |coro|
  
          Shows the help command for the specified entity if given.
          The entity can be a command or a cog.
  
          If no entity is given, then it'll show help for the
          entire bot.
  
          If the entity is a string, then it looks up whether it's a
          :class:`Cog` or a :class:`Command`.
  
          .. note::
  
              Due to the way this function works, instead of returning
              something similar to :meth:`~.commands.HelpCommand.command_not_found`
              this returns :class:`None` on bad input or no help command.
  
          Parameters
          ------------
          entity: Optional[Union[:class:`Command`, :class:`Cog`, :class:`str`]]
              The entity to show help for.
  
          Returns
          --------
          Any
              The result of the help command, if any.