code: def sources_files(self):
      ret = [
          self.csrc_abs_path(fname)
          for fname in [
              "gptq/linear_gptq.cpp",
              "gptq/column_remap.cu",
              "gptq/cuda_buffers.cu",
              "gptq/q4_matmul.cu",
              "gptq/q4_matrix.cu",
          ]
      ]
      return ret
  
file_path: ColossalAI/op_builder/gptq.py
imports: import re
  import torch
  from .builder import Builder
  from .utils import append_nvcc_threads
label_desc: Use image node_id 3 for calling the GPTQBuilder obj's underlying member method code with example usage: obj.sources_files() and returns: ret