docstr: Samples some operation that satisfies this filter. 
docstr_tok: ["Samples","some","operation","that","satisfies","this","filter","."]
code: def sample(self) -> str:
      """Samples some operation that satisfies this filter."""
      raise AbstractMethodNotImplementError
  
file_path: FEDOT/fedot/api/api_utils/assumptions/operations_filter.py
imports: from abc import abstractmethod
  from random import choice
  from typing import Optional, Iterable
  from fedot.core.pipelines.pipeline import Pipeline
  from fedot.utilities.custom_errors import AbstractMethodNotImplementError
label_desc: Use image node_id 2 for calling the OperationsFilter obj's underlying member method code with example usage: obj.sample() without return types