public AttributeFilter getNotFilter() {
        return this.notFilter;
    }
<p>
Performs a logical <code>NOT</code> operation on all filters that you specify.
</p>

@return Performs a logical <code>NOT</code> operation on all filters that you specify.
aws-java-sdk-kendra/src/main/java/com/amazonaws/services/kendra/model/AttributeFilter.java