class_docstr: The abstract class for Turi Create recommender system models. This class
  defines methods common to all recommender system models, but leaves unique
  model details to separate model classes.
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docstr: Get the current settings of the model. The keys depend on the type of
  model.
  
  Returns
  -------
  out : list
      A list of fields that can be queried using the ``get`` method.
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code: def _list_fields(self):
      """
      Get the current settings of the model. The keys depend on the type of
      model.
  
      Returns
      -------
      out : list
          A list of fields that can be queried using the ``get`` method.
      """
  
      response = self.__proxy__.list_fields()
      return [s for s in response["value"] if not s.startswith("_")]
  
imports: from __future__ import print_function
  from __future__ import division
  from __future__ import absolute_import
  import turicreate
  import random
  import array
  import logging
  import time
  import six
  from turicreate.toolkits import _coreml_utils
  from turicreate.toolkits._main import ToolkitError
  from turicreate.toolkits._model import Model
  from turicreate.toolkits._internal_utils import _toolkit_repr_print, _precomputed_field
  import turicreate.aggregate
  from turicreate.data_structures.sarray import SArray
  from turicreate.data_structures.sframe import SFrame
  from turicreate._deps import numpy, HAS_NUMPY
label_desc: Use image node_id 2 for calling the _Recommender obj's underlying member method code with example usage: obj._list_fields() and returns: unknown