code: def request(self, request):
          
          if request is None:
              raise ValueError("Invalid value for `request`, must not be `None`")
          if request is not None and not re.search('^(?:[A-Za-z0-9+\/]{4})*(?:[A-Za-z0-9+\/]{2}==|[A-Za-z0-9+\/]{3}=)?$', request):
              raise ValueError("Invalid value for `request`, must be a follow pattern or equal to `/^(?:[A-Za-z0-9+\/]{4})*(?:[A-Za-z0-9+\/]{2}==|[A-Za-z0-9+\/]{3}=)?$/`")
  
          self._request = request
docs: Sets the request of this V1beta1CertificateSigningRequestSpec.
          Base64-encoded PKCS#10 CSR data
  
          :param request: The request of this V1beta1CertificateSigningRequestSpec.
          :type: str