code: def schedule_epoch(self, schedule):
      return self.context
  
file_path: ffcv/ffcv/memory_managers/os_cache.py
imports: from typing import TYPE_CHECKING
  import numpy
  import numba
  from .base import MemoryManager, MemoryContext
  from ..pipeline.compiler import Compiler
label_desc: Use image node_id 2 for calling the OSCacheManager obj's underlying member method code with example usage: obj.schedule_epoch(schedule) and returns: self