code: def get_logger():
      """Grab the global logger instance.
  
      If a global Application is instantiated, grab its logger.
      Otherwise, grab the root logger.
      """
      global _logger
  
      if _logger is None:
          from .config import Application
  
          if Application.initialized():
              _logger = Application.instance().log
          else:
              _logger = logging.getLogger("traitlets")
              # Add a NullHandler to silence warnings about not being
              # initialized, per best practice for libraries.
              _logger.addHandler(logging.NullHandler())
      return _logger
  
label_desc: Use image node_id 1 for calling a global function with example usage: get_logger() and returns: _logger