code: def sources(self):
      src_dir = "csrc/deepspeed4science/evoformer_attn"
      return [
          f"{src_dir}/attention.cpp",
          f"{src_dir}/attention_back.cu",
          f"{src_dir}/attention_cu.cu",
      ]
  
file_path: deepspeed/deepspeed/ops/op_builder/evoformer_attn.py
imports: from .builder import CUDAOpBuilder, installed_cuda_version
  import os
label_desc: Use image node_id 4 for calling the EvoformerAttnBuilder obj's underlying member method code with example usage: obj.sources() and returns: list