code: def build(output, files):
      """Simply copy StackVM output to the destination.
  
      Parameters
      ----------
      output : str
          The target StackVM file.
  
      files : list
          A single self-contained StackVM module file.
      """
  
      if len(files) == 0:
          raise RuntimeError("StackVM artifact must be provided")
      if len(files) > 1:
          raise RuntimeError("Unexpected multiple StackVM artifacts")
  
      shutil.copy(files[0], output)
  
label_desc: Use image node_id 1 for calling a global function with example usage: build(output, files) without return types