import org.argeo.slc.services.process.SlcExecutionService;\r
import org.argeo.slc.web.mvc.AbstractServiceController;\r
import org.springframework.oxm.Unmarshaller;\r
+import org.springframework.util.Assert;\r
import org.springframework.web.servlet.ModelAndView;\r
import org.springframework.xml.transform.StringSource;\r
\r
\r
String agentId = request\r
.getParameter(MsgConstants.PROPERTY_SLC_AGENT_ID);\r
+ Assert.notNull(agentId, "agent id");\r
\r
String answer = request.getParameter("body");\r
if (answer == null) {\r