code: def _get_indentation(num_spaces=4):
      return " " * num_spaces
  
file_path: ray/python/ray/dag/format_utils.py
imports: from ray.dag import DAGNode
  from ray.util.annotations import DeveloperAPI
label_desc: Use image node_id 2 for calling a global function with example usage: _get_indentation(num_spaces) and returns: unknown