docstr: Start memory monitoring session
code: def start(cls):
      """
      Start memory monitoring session
      """
      cls.is_active = True
      tracemalloc.start()
  
file_path: FEDOT/fedot/utilities/memory.py
imports: import logging
  import tracemalloc
  from typing import Optional
  from golem.core.log import default_log
label_desc: Use image node_id 1 for calling the MemoryAnalytics obj's underlying member method code with example usage: obj.start(cls) without return types