code: public ListPhoneNumbersResult withPhoneNumbers(PhoneNumber... phoneNumbers) {
          if (this.phoneNumbers == null) {
              setPhoneNumbers(new java.util.ArrayList<PhoneNumber>(phoneNumbers.length));
          }
          for (PhoneNumber ele : phoneNumbers) {
              this.phoneNumbers.add(ele);
          }
          return this;
      }
docs: <p>
  The phone number details.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setPhoneNumbers(java.util.Collection)} or {@link #withPhoneNumbers(java.util.Collection)} if you want to
  override the existing values.
  </p>
  
  @param phoneNumbers
  The phone number details.
  @return Returns a reference to this object so that method calls can be chained together.