class_docstr: Partitions a sequence in a round robin fashion.
  
  This currently does not work!
code: def joinPartitions(self, listOfPartitions):
      testObject = listOfPartitions[0]
      # First see if we have a known array type
      if is_array(testObject):
          return self.flatten_array(listOfPartitions)
      if isinstance(testObject, (list, tuple)):
          return self.flatten_list(listOfPartitions)
      return listOfPartitions
  
file_path: ipyparallel/ipyparallel/client/map.py
imports: import sys
  from itertools import chain, islice
label_desc: Use image node_id 2 for calling the RoundRobinMap obj's underlying member method code with example usage: obj.joinPartitions(listOfPartitions) and returns: listOfPartitions, self, self