code: public void setDomainValidationOptions(java.util.Collection<DomainValidationOption> domainValidationOptions) {
          if (domainValidationOptions == null) {
              this.domainValidationOptions = null;
              return;
          }
  
          this.domainValidationOptions = new java.util.ArrayList<DomainValidationOption>(domainValidationOptions);
      }
docs: <p>
  The domain name that you want ACM to use to send you emails so that you can validate domain ownership.
  </p>
  
  @param domainValidationOptions
  The domain name that you want ACM to use to send you emails so that you can validate domain ownership.