Update payments API to v1.9

lib/PayPal/Api/Details.php

@@ -28,7 +28,7 @@ class Details extends PayPalModel
      * Amount of the subtotal of the items. **Required** if line items are specified. 10 characters max, with support for 2 decimal places.
      *
      * @param string|double $subtotal
-     *
+     * 
      * @return $this
      */
     public function setSubtotal($subtotal)
@@ -53,7 +53,7 @@ class Details extends PayPalModel
      * Amount charged for shipping. 10 characters max with support for 2 decimal places.
      *
      * @param string|double $shipping
-     *
+     * 
      * @return $this
      */
     public function setShipping($shipping)
@@ -78,7 +78,7 @@ class Details extends PayPalModel
      * Amount charged for tax. 10 characters max with support for 2 decimal places.
      *
      * @param string|double $tax
-     *
+     * 
      * @return $this
      */
     public function setTax($tax)
@@ -103,7 +103,7 @@ class Details extends PayPalModel
      * Amount being charged for the handling fee. Only supported when the `payment_method` is set to `paypal`.
      *
      * @param string|double $handling_fee
-     *
+     * 
      * @return $this
      */
     public function setHandlingFee($handling_fee)
@@ -128,7 +128,7 @@ class Details extends PayPalModel
      * Amount being discounted for the shipping fee. Only supported when the `payment_method` is set to `paypal`.
      *
      * @param string|double $shipping_discount
-     *
+     * 
      * @return $this
      */
     public function setShippingDiscount($shipping_discount)
@@ -153,7 +153,7 @@ class Details extends PayPalModel
      * Amount being charged for the insurance fee. Only supported when the `payment_method` is set to `paypal`.
      *
      * @param string|double $insurance
-     *
+     * 
      * @return $this
      */
     public function setInsurance($insurance)
@@ -178,7 +178,7 @@ class Details extends PayPalModel
      * Amount being charged as gift wrap fee.
      *
      * @param string|double $gift_wrap
-     *
+     * 
      * @return $this
      */
     public function setGiftWrap($gift_wrap)
@@ -203,7 +203,7 @@ class Details extends PayPalModel
      * Fee charged by PayPal. In case of a refund, this is the fee amount refunded to the original receipient of the payment.
      *
      * @param string|double $fee
-     *
+     * 
      * @return $this
      */
     public function setFee($fee)