class_docstr: Create a queue object with a given maximum size.
  
  If maxsize is <= 0, the queue size is infinite.
code: def _get(self):
      return self.queue.popleft()
  
imports: import threading
  import types
  from collections import deque
  from heapq import heappush, heappop
  from time import monotonic
label_desc: Use image node_id 14 for calling the Queue obj's underlying member method code with example usage: obj._get() and returns: self