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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def AdjustDescriptor(self, fields):
 """Payload-aware metadata processor."""


    for f in fields:
      if f.name == "args_rdf_name":
        f.name = "payload_type"

      if f.name == "args":
        f.name = "payload"

    return fields