<DataSource	ID="ViewLoader" inheritsFrom="Canvas" Constructor="ViewLoader">
    <fields>
        <Field name="viewURL"             type="url"/>
        <Field name="viewURLParams"       type="Object"/>
        <Field name="loadingMessage"      type="string"/>
        <Field name="httpMethod"          type="SendMethod"/>
        <field name="allowCaching" type="boolean"/>
    </fields>
</DataSource>
