file_path: fairseq2/tests/unit/nn/transformer/test_attention_mask.py
imports: import torch
  from fairseq2.nn import IncrementalStateBag
  from fairseq2.nn.transformer import ALiBiMaskFactory, CausalAttentionMaskFactory
  from tests.common import assert_close, device
label_desc: Use image node_id 2 for calling the TestALiBiAttentionMaskGenerator obj's underlying member method code with example usage: obj.test_call_works_in_incremental_decode() without return types