docstr: Number of tokens that have begun a forward pass but not yet completed it.
docstr_tok: ["Number","of","tokens","that","have","begun","a","forward","pass","but","not","yet","completed","it","."]
code: def in_flight_tokens(self) -> int:
      """
      Number of tokens that have begun a forward pass but not yet completed it.
      """
      return self._in_flight_tokens
  
imports: from typing import List, Tuple, Union
  import torch
label_desc: Use image node_id 3 for calling the DSSequenceDescriptor obj's underlying member method code with example usage: obj.in_flight_tokens() and returns: self