code: public void setE164PhoneNumbers(java.util.Collection<String> e164PhoneNumbers) {
          if (e164PhoneNumbers == null) {
              this.e164PhoneNumbers = null;
              return;
          }
  
          this.e164PhoneNumbers = new java.util.ArrayList<String>(e164PhoneNumbers);
      }
docs: <p>
  List of phone numbers, in E.164 format.
  </p>
  
  @param e164PhoneNumbers
  List of phone numbers, in E.164 format.