code: def _parse_pipeline_string(self, pipeline_string):
      pipeline = list()
  
      string_pipeline_operations = pipeline_string.split("|")
  
      for string_pipeline_operation in string_pipeline_operations:
          if ":" not in string_pipeline_operation:
              string_pipeline_operation += ":"
  
          operation_key, args = string_pipeline_operation.split(":")
  
          if operation_key in self.pipeline_operations:
              pipeline.append(
                  (
                      self.pipeline_operations[operation_key],
                      args.split(","),
                  )
              )
  
      return pipeline
  
imports: from serpent.frame_transformer import FrameTransformer
label_desc: Use image node_id 4 for calling the FrameTransformationPipeline obj's underlying member method code with example usage: obj._parse_pipeline_string(pipeline_string) and returns: pipeline