<events>
            <catalog_product_save_after>
                <observers>
                    <Fruit_Banana_Model_Observer>
                       <type>singleton</type>
                       <class>Fruit_Banana_Model_Observer</class>
                       <method>saveProductObserve</method>
                    </Fruit_Banana_Model_Observer>
                </observers>
            </catalog_product_save_after>
            <sales_order_place_after>
                <observers>
                    <Fruit_Banana_Checkout_Observer>
                       <type>singleton</type>
                       <class>Fruit_Banana_Model_Observer</class>
                       <method>checkoutObserver</method>
                    </Fruit_Banana_Checkout_Observer>
                </observers>
            </sales_order_place_after>
        </events>