code: public CreatePhoneNumberOrderRequest withE164PhoneNumbers(String... e164PhoneNumbers) {
          if (this.e164PhoneNumbers == null) {
              setE164PhoneNumbers(new java.util.ArrayList<String>(e164PhoneNumbers.length));
          }
          for (String ele : e164PhoneNumbers) {
              this.e164PhoneNumbers.add(ele);
          }
          return this;
      }
docs: <p>
  List of phone numbers, in E.164 format.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setE164PhoneNumbers(java.util.Collection)} or {@link #withE164PhoneNumbers(java.util.Collection)} if you
  want to override the existing values.
  </p>
  
  @param e164PhoneNumbers
  List of phone numbers, in E.164 format.
  @return Returns a reference to this object so that method calls can be chained together.