code: def should_benchmark(self, trainer: Trainer):
      if self.stop_benchmark_at_step is None:
          return trainer.global_step >= self.start_benchmark_at_step
      return (
          self.start_benchmark_at_step
          <= trainer.global_step
          <= self.stop_benchmark_at_step
      )
  
file_path: NeMo/examples/multimodal/x_to_nerf/benchmark_callback.py
imports: import time
  from typing import Optional
  from pytorch_lightning import Callback, LightningModule, Trainer
  from nemo.utils import logging
label_desc: Use image node_id 2 for calling the BenchmarkCallback obj's underlying member method code with example usage: obj.should_benchmark(trainer) and returns: unknown, unknown