code: public ReceiptRule withRecipients(String... recipients) {
          if (this.recipients == null) {
              setRecipients(new com.amazonaws.internal.SdkInternalList<String>(recipients.length));
          }
          for (String ele : recipients) {
              this.recipients.add(ele);
          }
          return this;
      }
docs: <p>
  The recipient domains and email addresses that the receipt rule applies to. If this field is not specified, this
  rule will match all recipients under all verified domains.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setRecipients(java.util.Collection)} or {@link #withRecipients(java.util.Collection)} if you want to
  override the existing values.
  </p>
  
  @param recipients
  The recipient domains and email addresses that the receipt rule applies to. If this field is not
  specified, this rule will match all recipients under all verified domains.
  @return Returns a reference to this object so that method calls can be chained together.