String connectionUrl = pc.get(prefix + ".connectionUrl", false);
String user = pc.get(prefix + ".user", false);
String password = pc.get(prefix + ".password", false);
JuEmfUtil emfUtil = JuEmfUtil.create()
.persistenceUnitName(persistenceUnitName)
.connectionUrl(connectionUrl)
.user(user)
.password(password)
.build();