<binding>
  <mapping name="customer" class="example16.Customer">
    <structure field="identity"/>
    <value name="street" field="street" usage="optional"/>
    <value name="city" field="city" usage="optional"/>
    <value name="state" field="state" usage="optional"/>
    <value name="zip" field="zip" usage="optional"/>
    <value name="phone" field="phone" usage="optional"/>
  </mapping>
  <mapping class="example16.Identity" abstract="true">
    <value name="cust-num" field="customerNumber"/>
  </mapping>
  <mapping name="person" class="example16.Person" extends="example16.Identity">
    <structure map-as="example16.Identity"/>
    <value name="first-name" field="firstName"/>
    <value name="last-name" field="lastName"/>
  </mapping>
  <mapping name="company" class="example16.Company" extends="example16.Identity">
    <value name="name" field="name"/>
    <value name="tax-id" field="taxId"/>
    <structure map-as="example16.Identity"/>
  </mapping>
</binding>
