code: def _format_not_supported_reasons(op, reasons: List[str]) -> str:
      return (
          f"`{op.NAME}` is not supported because:\n    "
          + "\n    ".join(reasons)
      )
  
file_path: xformers/xformers/ops/fmha/dispatch.py
imports: import textwrap
  from collections import deque
  from typing import List, Sequence, Type, TypeVar
  from .None import attn_bias, cutlass, decoder, flash, small_k, triton, triton_splitk
  from .common import AttentionBwOpBase, AttentionFwOpBase, Inputs
label_desc: Use image node_id 5 for calling a global function with example usage: _format_not_supported_reasons(op, reasons) and returns: unknown