class_docstr: Has methods to ``enumerate`` and ``count`` the partitions of a multiset.
  
  This implements a refactored and extended version of Knuth's algorithm
  7.1.2.5M [AOCP]_."
  
  The enumeration methods of this class are generators and return
  data structures which can be interpreted by the same visitor
  functions used for the output of ``multiset_partitions_taocp``.
  
  Examples
  ========
  
  >>> from sympy.utilities.enumerative import MultisetPartitionTraverser
  >>> m = MultisetPartitionTraverser()
  >>> m.count_partitions([4,4,4,2])
  127750
  >>> m.count_partitions([3,3,3])
  686
  
  See Also
  ========
  
  multiset_partitions_taocp
  sympy.utilities.iterables.multiset_partitions
  
  References
  ==========
  
  .. [AOCP] Algorithm 7.1.2.5M in Volume 4A, Combinatoral Algorithms,
         Part 1, of The Art of Computer Programming, by Donald Knuth.
  
  .. [Factorisatio] On a Problem of Oppenheim concerning
         "Factorisatio Numerorum" E. R. Canfield, Paul Erdos, Carl
         Pomerance, JOURNAL OF NUMBER THEORY, Vol. 17, No. 1. August
         1983.  See section 7 for a description of an algorithm
         similar to Knuth's.
  
  .. [Yorgey] Generating Multiset Partitions, Brent Yorgey, The
         Monad.Reader, Issue 8, September 2007.
docstr: Useful for understanding/debugging the algorithms.  Not
  generally activated in end-user code.
docstr_tok: ["Useful","for","understanding\/debugging","the","algorithms",".","Not","generally","activated","in","end-user","code","."]
code: def db_trace(self, msg):
      """Useful for understanding/debugging the algorithms.  Not
      generally activated in end-user code."""
      if self.debug:
          # XXX: animation_visitor is undefined... Clearly this does not
          # work and was not tested. Previous code in comments below.
          raise RuntimeError
  
label_desc: Use image node_id 2 for calling the MultisetPartitionTraverser obj's underlying member method code with example usage: obj.db_trace(msg) without return types