Incorrectly configured XML bean lookup-method

public abstract class FooLookupBean {
  protected abstract FooBean createCommand();
  private FooBean createCommand() {...}
  protected static FooBean createCommandStatic() {...}
  protected abstract FooBean createWithArgs(String foo);
  protected abstract OtherBean createOtherBean();
}

<beans>
  <bean class="FooLookupBean" id="lookupTest">
    <lookup-method bean="fooBean" name="createCommand"/>
    <!-- private -->
    <lookup-method bean="fooBean" name="createCommand"/> <!-- "Method must be public or protected" -->
    <!-- static -->
    <lookup-method bean="fooBean" name="createCommandStatic"/> <!-- Static method not allowed here -->
    <!-- with arguments -->
    <lookup-method bean="fooBean" name="createWithArgs"/> <!-- Method must have no parameters -->
    <!-- not exist -->
    <lookup-method bean="fooBean" name="unknown"/> <!-- unknown method -->
    <!-- mismatch -->
    <lookup-method bean="fooBean" name="createOtherBean"/> <!-- Lookup method return type does not match the 'FooBean' bean class -->
  </bean>

  <bean class="FooBean" id="fooBean"/>
  <bean class="OtherBean" id="otherBean"/>
</beans>