WSClientException.class can not be resolved

I’ve imported wm_search_ws project into my CAF Designer editor and received the following error:

The type com.webmethods.caf.wsclient.WSClientException cannot be resolved. It is indirectly referenced from required .class files

I cannot found these classes or packages within my CAF SDK installation. Can someone help me download the right files so that I can resolved this issue?

Those classes are included in your project via the CAF Glue WS Client facet. It should be included by default, but you can manually add it by going the Project Properties->Project Faces->Java Server Faces panel and selecting the CAF Glue WS Client facet.