class_docstr: This class gives Python iteration semantics on top of a C++ 'Iterable'.
class_docstr_tok: ["This","class","gives","Python","iteration","semantics","on","top","of","a","C++","'Iterable","'","."]
docstr: Sub-classes should implement __next__ in this method.
docstr_tok: ["Sub-classes","should","implement","__next__","in","this","method","."]
code: def _raw_next(self):
      """Sub-classes should implement __next__ in this method."""
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import abc
  import six
  from third_party.nucleus.protos import bed_pb2
  from third_party.nucleus.protos import bedgraph_pb2
  from third_party.nucleus.protos import fastq_pb2
  from third_party.nucleus.protos import gff_pb2
  from third_party.nucleus.protos import reads_pb2
  from third_party.nucleus.protos import variants_pb2
label_desc: Use image node_id 5 for calling the WrappedCppIterable obj's underlying member method code with example usage: obj._raw_next() without return types