code: def _either_or(a: Optional[int], b: int) -> int:
      return a if a is not None else b
  
file_path: xformers/xformers/components/attention/compositional.py
imports: import math
  from dataclasses import dataclass
  from typing import Optional
  import torch
  import torch.nn.functional
  from torch import Tensor, nn
  from xformers.components.attention import Attention, AttentionConfig, AttentionMask, register_attention
  from xformers.components.attention.core import _softmax
  from xformers.components.input_projection import InputProjection, InputProjectionConfig
label_desc: Use image node_id 1 for calling a global function with example usage: _either_or(a, b) and returns: unknown