The jBPM5 Human Task sample in JBDS complains about the startH2Server and setupDataSource methods from type JBPMHelper refering to missing types

Issue

• I am trying to execute the sample jBPM5 Human Task sample that comes with JBDS 5.x . I am trying to use it with the in-memory database (Hypersonic) for the persistence. However, the following lines from ProcessMain.java shows below errors while I am working on the workspace.

JBPMHelper.startH2Server();
JBPMHelper.setupDataSource();

Error

The method startH2Server() from the type JBPMHelper refers to the missing type Server
The method setupDataSource() from the type JBPMHelper refers to the missing type PoolingDataSource

Can you please guide me what am I missing and also guide me how to set-up the example properly?