public String getNextToken() {
        return this.nextToken;
    }
The token for the next set of results, or ''null'' if there are no additional results.

@return The token for the next set of results, or ''null'' if there are no additional results.
aws-java-sdk-greengrass/src/main/java/com/amazonaws/services/greengrass/model/ListDeviceDefinitionVersionsResult.java