:each={contacts} for:item="contact">
                    <p key={contact.Id}>{contact.Name}</p>
                </template>
            </template>
            <template lwc:elseif={error}>
                <c-error-panel errors={error}></c-error-panel>
            </template>
        </div>
        <c-view-source
            source="lwc/apexImperativeMethodWithParams"
            slot="footer"
        >
            Call an Apex method with parameters imperatively.
        </c-view-source>
    </lightning-ca