printing dsms.buffers.updated leads to circular reference

[MBueschelberger]

Simply returning dsms.buffers.updated leads to the following traceback:

---------------------------------------------------------------------------
ValueError                                Traceback (most recent call last)
File ~/.local/lib/python3.10/site-packages/IPython/core/formatters.py:770, in PlainTextFormatter.__call__(self, obj)
    763 stream = StringIO()
    764 printer = pretty.RepresentationPrinter(stream, self.verbose,
    765     self.max_width, self.newline,
    766     max_seq_length=self.max_seq_length,
    767     singleton_pprinters=self.singleton_printers,
    768     type_pprinters=self.type_printers,
    769     deferred_pprinters=self.deferred_printers)
--> 770 printer.pretty(obj)
    771 printer.flush()
    772 return stream.getvalue()

File ~/.local/lib/python3.10/site-packages/IPython/lib/pretty.py:394, in RepresentationPrinter.pretty(self, obj)
    391 for cls in _get_mro(obj_class):
    392     if cls in self.type_pprinters:
    393         # printer registered in self.type_pprinters
--> 394         return self.type_pprinters[cls](obj, self, cycle)
    395     else:
    396         # deferred printer
    397         printer = self._in_deferred_types(cls)

File ~/.local/lib/python3.10/site-packages/IPython/lib/pretty.py:701, in _dict_pprinter_factory.<locals>.inner(obj, p, cycle)
    699     p.pretty(key)
    700     p.text(': ')
--> 701     p.pretty(obj[key])
    702 p.end_group(step, end)

File ~/.local/lib/python3.10/site-packages/IPython/lib/pretty.py:419, in RepresentationPrinter.pretty(self, obj)
    408                         return meth(obj, self, cycle)
    409                 if (
    410                     cls is not object
    411                     # check if cls defines __repr__
   (...)
    417                     and callable(_safe_getattr(cls, "__repr__", None))
    418                 ):
--> 419                     return _repr_pprint(obj, self, cycle)
    421     return _default_pprint(obj, self, cycle)
    422 finally:

File ~/.local/lib/python3.10/site-packages/IPython/lib/pretty.py:794, in _repr_pprint(obj, p, cycle)
    792 """A pprint that just redirects to the normal repr function."""
    793 # Find newlines and replace them with p.break_()
--> 794 output = repr(obj)
    795 lines = output.splitlines()
    796 with p.group():

File /app/dsms/knowledge/kitem.py:262, in KItem.__repr__(self)
    260 def __repr__(self) -> str:
    261     """Pretty print the kitem Fields"""
--> 262     return str(self)

File /app/dsms/knowledge/kitem.py:256, in KItem.__str__(self)
    254 def __str__(self) -> str:
    255     """Pretty print the kitem fields"""
--> 256     return print_model(
    257         self, "kitem", exclude_extra=self.dsms.config.hide_properties
    258     )

File /app/dsms/knowledge/utils.py:47, in print_model(self, key, exclude_extra)
     45 def print_model(self, key, exclude_extra: set = set()) -> str:
     46     """Pretty print the ktype fields"""
---> 47     dumped = dump_model(self, exclude_extra)
     48     return yaml.dump({key: dumped})

File /app/dsms/knowledge/utils.py:66, in dump_model(self, exclude_extra)
     52 """
     53 Dump the model fields into a dictionary format with optional exclusions.
     54 
   (...)
     63     Dict[str, Any]: A dictionary of the model fields with specified exclusions.
     64 """
     65 exclude = self.model_config.get("exclude", set()) | exclude_extra
---> 66 dumped = self.model_dump(
     67     exclude_none=True,
     68     exclude_unset=True,
     69     exclude=exclude,
     70 )
     71 return {
     72     key: (str(value) if isinstance(value, UUID) else value)
     73     for key, value in dumped.items()
     74 }

File /usr/local/lib/python3.10/site-packages/pydantic/main.py:426, in BaseModel.model_dump(self, mode, include, exclude, context, by_alias, exclude_unset, exclude_defaults, exclude_none, round_trip, warnings, serialize_as_any)
    388 def model_dump(
    389     self,
    390     *,
   (...)
    401     serialize_as_any: bool = False,
    402 ) -> dict[str, Any]:
    403     """Usage docs: https://docs.pydantic.dev/2.10/concepts/serialization/#modelmodel_dump
    404 
    405     Generate a dictionary representation of the model, optionally specifying which fields to include or exclude.
   (...)
    424         A dictionary representation of the model.
    425     """
--> 426     return self.__pydantic_serializer__.to_python(
    427         self,
    428         mode=mode,
    429         by_alias=by_alias,
    430         include=include,
    431         exclude=exclude,
    432         context=context,
    433         exclude_unset=exclude_unset,
    434         exclude_defaults=exclude_defaults,
    435         exclude_none=exclude_none,
    436         round_trip=round_trip,
    437         warnings=warnings,
    438         serialize_as_any=serialize_as_any,
    439     )

ValueError: Circular reference detected (id repeated)