public void setDirectoryId(String directoryId) {
        this.directoryId = directoryId;
    }
<p>
The Directory ID to remove as a publisher. This directory will no longer send messages to the specified Amazon
SNS topic.
</p>

@param directoryId
       The Directory ID to remove as a publisher. This directory will no longer send messages to the specified
       Amazon SNS topic.
aws-java-sdk-directory/src/main/java/com/amazonaws/services/directory/model/DeregisterEventTopicRequest.java