google.protobuf.field_mask_pb2.FieldMask
Required. The field mask describing which fields to update
as a comma-separated list. For example, if only the name
servers are being updated for an existing Custom DNS
configuration, the ``update_mask`` is
``"custom_dns.name_servers"``.
When changing the DNS provider from one type to another,
pass the new provider's field name as part of the field
mask. For example, when changing from a Google Domains DNS
configuration to a Custom DNS configuration, the
``update_mask`` is ``"custom_dns"``. //
validate_only
bool
Validate the request without actually
updating the DNS settings.