code: def generate_pipeline_code(pipeline_tree, operators):
      
      steps = _process_operator(pipeline_tree, operators)
      pipeline_text = "make_pipeline(\n{STEPS}\n)".format(STEPS=_indent(",\n".join(steps), 4))
      return pipeline_text
docs: Generate code specific to the construction of the sklearn Pipeline.
  
      Parameters
      ----------
      pipeline_tree: list
          List of operators in the current optimized pipeline
  
      Returns
      -------
      Source code for the sklearn pipeline