class_docstr: Base class for conversion between DataFrames and Collections.
class_docstr_tok: ["Base","class","for","conversion","between","DataFrames","and","Collections","."]
code: def collection_to_dataframe(
      col, metric_output_columns: Sequence[str]
  ):
      pass
  
imports: import abc
  import copy
  from collections import namedtuple
  from dataclasses import dataclass
  from typing import Any, Dict, Iterable, List, Optional, Sequence, Tuple, Union
  import pipeline_dp
  import pyspark
label_desc: Use image node_id 2 for calling the DataFrameConvertor obj's underlying member method code with example usage: obj.collection_to_dataframe(col, metric_output_columns) without return types