class_docstr: A blocking operator that executes once its inputs are complete.
  
  This operator implements distributed sort / shuffle operations, etc.
docstr: Close all internal sub progress bars.
docstr_tok: ["Close","all","internal","sub","progress","bars","."]
code: def close_sub_progress_bars(self):
      """Close all internal sub progress bars."""
      if self._sub_progress_bar_dict is not None:
          for sub_bar in self._sub_progress_bar_dict.values():
              sub_bar.close()
  
imports: from typing import List, Optional
  from ray.data._internal.execution.interfaces import AllToAllTransformFn, PhysicalOperator, RefBundle, TaskContext
  from ray.data._internal.logical.interfaces import LogicalOperator
  from ray.data._internal.progress_bar import ProgressBar
  from ray.data._internal.stats import StatsDict
label_desc: Use image node_id 11 for calling the AllToAllOperator obj's underlying member method code with example usage: obj.close_sub_progress_bars() without return types