code: def add_enum(name=None, index=None, flags=idaapi.hexflag(), bitfield=False):
      
      if name is not None:
          with ignored(exceptions.EnumNotFound):
              _get_enum(name)
              raise exceptions.EnumAlreadyExists()
  
      if index is None or index < 0:
          index = idaapi.get_enum_qty()
  
      eid = idaapi.add_enum(index, name, flags)
  
      if eid == idaapi.BADADDR:
          raise exceptions.EnumCreationFailed('Failed creating enum "{}"'.format(name))
  
      if bitfield:
          idaapi.set_enum_bf(eid, bitfield)
  
      return Enum(eid=eid)
docs: Create a new enum.
  
      Args:
          name: Name of the enum to create.
          index: The index of the enum. Leave at default to append the enum as the last enum.
          flags: Enum type flags.
          bitfield: Is the enum a bitfield.
  
      Returns:
          An `Enum` object.