Process Design Services

Hi,

I like to know if the Process Design Service (API) https://docs.appian.com/suite/help/18.4/api/com/appiancorp/suiteapi/process/ProcessDesignService.html, can be directly referred in a java project and use the methods in it. Like getProcessModel method (https://docs.appian.com/suite/help/18.4/api/com/appiancorp/suiteapi/process/ProcessDesignService.html#getProcessModel-java.lang.Long-)

Thanks