code: def get_file(self, commit, path, offset_bytes=0, size_bytes=0, extract_value=True):
          
          req = proto.GetFileRequest(
              file=proto.File(commit=commit_from(commit), path=path),
              offset_bytes=offset_bytes,
              size_bytes=size_bytes
          )
          res = self.stub.GetFile(req, metadata=self.metadata)
          if extract_value:
              return ExtractValueIterator(res)
          return res
docs: Returns an iterator of the contents contents of a file at a specific Commit.
  
          Params:
          * commit: A tuple, string, or Commit object representing the commit.
          * path: The path of the file.
          * offset_bytes: Optional. specifies a number of bytes that should be
          skipped in the beginning of the file.
          * size_bytes: Optional. limits the total amount of data returned, note
          you will get fewer bytes than size if you pass a value larger than the
          size of the file. If size is set to 0 then all of the data will be
          returned.
          * extract_value: If True, then an ExtractValueIterator will be return,
          which will iterate over the bytes of the file. If False, then the
          protobuf response iterator will return.