code: public EventFilter withEventTypeCategories(String... eventTypeCategories) {
          if (this.eventTypeCategories == null) {
              setEventTypeCategories(new java.util.ArrayList<String>(eventTypeCategories.length));
          }
          for (String ele : eventTypeCategories) {
              this.eventTypeCategories.add(ele);
          }
          return this;
      }
docs: <p>
  A list of event type category codes (<code>issue</code>, <code>scheduledChange</code>, or
  <code>accountNotification</code>).
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setEventTypeCategories(java.util.Collection)} or {@link #withEventTypeCategories(java.util.Collection)}
  if you want to override the existing values.
  </p>
  
  @param eventTypeCategories
  A list of event type category codes (<code>issue</code>, <code>scheduledChange</code>, or
  <code>accountNotification</code>).
  @return Returns a reference to this object so that method calls can be chained together.
  @see EventTypeCategory