class_docstr: Operation, single operation within execution plan.
code: def child_count(self):
      return len(self.children)
  
file_path: catboost/contrib/python/redis/py3/redis/commands/graph/execution_plan.py
imports: import re
label_desc: Use image node_id 3 for calling the Operation obj's underlying member method code with example usage: obj.child_count() and returns: len