class_docstr: Data manager for sampling data, use reservoir sampling.
      
docstr: Get self._items
  
  Returns:
      All items.
docstr_tok: ["Get","self._items","Returns",":","All","items","."]
code: def items(self):
      """Get self._items
  
      Returns:
          All items.
      """
      with self._mutex:
          return self._items
  
imports: import collections
  import random
  import threading
label_desc: Use image node_id 5 for calling the _ReservoirBucket obj's underlying member method code with example usage: obj.items() and returns: self