code: def set_client_cert(self, cert):
          
          self.request["cert"] = self._input_client_cert(cert)
          return self.request["cert"]
docs: *Sets the client cert for the requests.*
  
          The cert is either a path to a .pem file, or a JSON array, or a list
          having the cert path and the key path.
  
          Values ``null`` and ``${None}`` can be used for clearing the cert.
  
          *Examples*
  
          | `Set Client Cert` | ${CURDIR}/client.pem |
          | `Set Client Cert` | ["${CURDIR}/client.cert", "${CURDIR}/client.key"] |
          | `Set Client Cert` | ${paths_list} |