code: public void setValidationEmails(java.util.Collection<String> validationEmails) {
          if (validationEmails == null) {
              this.validationEmails = null;
              return;
          }
  
          this.validationEmails = new java.util.ArrayList<String>(validationEmails);
      }
docs: <p>
  A list of email addresses that ACM used to send domain validation emails.
  </p>
  
  @param validationEmails
  A list of email addresses that ACM used to send domain validation emails.