class_docstr: Custom InputProcessor for file based ExampleGen driver.
class_docstr_tok: ["Custom","InputProcessor","for","file","based","ExampleGen","driver","."]
docstr: Resolves the latest Version of a Span.
docstr_tok: ["Resolves","the","latest","Version","of","a","Span","."]
code: def get_latest_version(self, span: int) -> Optional[int]:
      """Resolves the latest Version of a Span."""
      raise NotImplementedError
  
imports: import abc
  import copy
  from typing import Iterable, Optional, Tuple
  from tfx.components.example_gen import utils
  from tfx.proto import example_gen_pb2
  from tfx.proto import range_config_pb2
label_desc: Use image node_id 5 for calling the FileBasedInputProcessor obj's underlying member method code with example usage: obj.get_latest_version(span) without return types