code: def __enter__(self):
      file_path = os.path.join(
          os.path.dirname(os.path.abspath(__file__)), self.name
      )
  
      self.generated_config = tempfile.NamedTemporaryFile()
      self.database_file = tempfile.NamedTemporaryFile()
  
      with open(file_path) as config:
          new_config = config.read().replace(
              "${FILE}", self.database_file.name
          )
          self.generated_config.write(new_config.encode("utf-8"))
          self.generated_config.flush()
  
      return open(self.generated_config.name)
  
file_path: orion/tests/unittests/core/io/conftest.py
imports: import copy
  import os
  import tempfile
  import pytest
  from orion.core.evc import conflicts
label_desc: Use image node_id 2 for calling the _GenerateConfig obj's underlying member method code with example usage: obj.__enter__() and returns: open