docstr: Update the token usage for the current step.
docstr_tok: ["Update","the","token","usage","for","the","current","step","."]
code: def set_token_usage_for_this_step(self, used_tokens: int):
      """Update the token usage for the current step."""
      steps_str = str(self.steps)
      self.incremental_step_token_usage[steps_str] = used_tokens
      self.total_tokens_used += used_tokens
      self.cumulative_step_token_usage[
          steps_str
      ] = self.total_tokens_used
  
imports: import logging
  from collections import defaultdict
  from typing import Dict, List, Tuple, TYPE_CHECKING
  from ludwig.api_annotations import DeveloperAPI
  from ludwig.constants import AUTO, COMBINED, LOSS
  from ludwig.models.base import BaseModel
  from ludwig.modules.metric_modules import get_best_function
  from ludwig.utils.data_utils import save_json
  from ludwig.utils.metric_utils import TrainerMetric
label_desc: Use image node_id 7 for calling the ProgressTracker obj's underlying member method code with example usage: obj.set_token_usage_for_this_step(used_tokens) without return types