Update payments API to v1.9

lib/PayPal/Api/ExternalFunding.php

@@ -16,6 +16,7 @@ use PayPal\Common\PayPalModel;
  * @property string funding_account_id
  * @property string display_text
  * @property \PayPal\Api\Amount amount
+ * @property string funding_instruction
  */
 class ExternalFunding extends PayPalModel
 {
@@ -134,4 +135,27 @@ class ExternalFunding extends PayPalModel
         return $this->amount;
     }
 
+    /**
+     * Indicates that the Payment should be fully funded by External Funded Incentive
+     * Valid Values: ["FULLY_FUNDED"]
+     *
+     * @param string $funding_instruction
+     *
+     * @return $this
+     */
+    public function setFundingInstruction($funding_instruction)
+    {
+        $this->funding_instruction = $funding_instruction;
+        return $this;
+    }
+
+    /**
+     * Indicates that the Payment should be fully funded by External Funded Incentive
+     *
+     * @return string
+     */
+    public function getFundingInstruction()
+    {
+        return $this->funding_instruction;
+    }
 }