Problem whit com.sap.csin

Hi, We are development a new search interface (in Java) for the portal, based in the el codesample (SearchIview.java), who is located in SDN sap developed network (www.sdn.sap.com).

We declare and import the service that use in the portal component so that the class loader can find them (htmlb, usermanagement, urlgenerator, knowledgemanagement). But we have a problems in the declare references to other Java portal component packages, because does not recognize com.sap.csin.Utils, pertaining at com.sap.csin classes, references in the default.properties (SharingReference=com.sap.csin). This Packages we can’t find, and that is our problems, because without this package, is impossible to make the process of Compilation.

You know where is this package(com.sap.csin)? Where we can find it? in order to be able to import it.

Please..we need Help !