     sortBy="#{c.investigation.name}">
                            <f:facet name="header">
                                <h:outputLabel value="Test Name"/>
                            </f:facet>
                            <h:outputLabel value="#{c.investigation.name}"  />
                            <f:facet name="footer">
                                <h:outputLabel value="Total">
                                </h:outputLabel>
                            </f:facet>
                        </p:column