class_docstr: Configuration class.
  
  This class is responsible for loading, saving, and storing PennyLane
  and plugin/device configurations.
  
  Args:
      name (str): filename of the configuration file.
          This should be a valid TOML file. You may also pass an absolute
          or a relative file path to the configuration file.
code: def __bool__(self):
      return bool(self._config)
  
file_path: pennylane/pennylane/configuration.py
imports: import contextlib
  import os
  import toml
  from appdirs import user_config_dir
label_desc: Use image node_id 9 for calling the Configuration obj's underlying member method code with example usage: obj.__bool__() and returns: bool