code: def get_file_tracebacks(self, file_path):
      
      if file_path not in self._source_file_content:
        raise ValueError(
            'Source file of path "%s" has not been received by this instance of '
            'SourceManager.' % file_path)
  
      lineno_to_op_names_and_stack_position = dict()
      for op_log_entry in self._graph_traceback.log_entries:
        for stack_pos, trace in enumerate(op_log_entry.code_def.traces):
          if self._graph_traceback.id_to_string[trace.file_id] == file_path:
            if trace.lineno not in lineno_to_op_names_and_stack_position:
              lineno_to_op_names_and_stack_position[trace.lineno] = []
            lineno_to_op_names_and_stack_position[trace.lineno].append(
                (op_log_entry.name, stack_pos))
      return lineno_to_op_names_and_stack_position
docs: Get the lists of ops created at lines of a specified source file.
  
      Args:
        file_path: Path to the source file.
  
      Returns:
        A dict mapping line number to a list of 2-tuples,
          `(op_name, stack_position)`
        `op_name` is the name of the name of the op whose creation traceback
          includes the line.
        `stack_position` is the position of the line in the op's creation
          traceback, represented as a 0-based integer.
  
      Raises:
        ValueError: If `file_path` does not point to a source file that has been
          received by this instance of `SourceManager`.