code: def __init__(self) -> None:
      self.num_calls: int = 0
      self.timer: Timer = Timer()
      self.prev_cost: float = 0.0
      self.cache_misses: int = 0
  
file_path: evadb/evadb/utils/stats.py
imports: import time
  from dataclasses import dataclass
  from evadb.utils.logging_manager import logger
label_desc: Use image node_id 1 to create a new FunctionStats object  with example: obj = FunctionStats()