code: def get_spec_service_account(self, spec):
      if self.format_version == 1:
          return spec.get("service_account")
      service_account = spec[1]
      if service_account:
          return {
              "namespace": service_account[0],
              "name": service_account[1],
          }
      return None
  
file_path: hail/batch/batch/batch_format_version.py
imports: from typing import Optional, Tuple
  from hailtop.batch_client.aioclient import Job
label_desc: Use image node_id 8 for calling the BatchFormatVersion obj's underlying member method code with example usage: obj.get_spec_service_account(spec) and returns: None, spec, dict