docs: def _get_bios_hash_password(self, bios_password):
          """Get the hashed BIOS password."""
          request_headers = {}
          if bios_password:
              bios_password_hash = hashlib.sha256((bios_password.encode()).
                                                  hexdigest().upper())
              request_headers['X-HPRESTFULAPI-AuthToken'] = bios_password_hash
          return request_headers