Removed Deprecated Getter and Setters

- Removed Deprecated Getter Setters from all Model Classes
- All Camelcase getters and setters are removed. Please use first letter uppercase syntax
- E.g. instead of using get_notify_url(), use getNotifyUrl() instead

lib/PayPal/Api/OpenIdAddress.php

@@ -14,6 +14,7 @@ class OpenIdAddress extends PayPalModel
      * Full street address component, which may include house number, street name.
      *
      * @param string $street_address
+     * @return self
      */
     public function setStreetAddress($street_address)
     {
@@ -35,6 +36,7 @@ class OpenIdAddress extends PayPalModel
      * City or locality component.
      *
      * @param string $locality
+     * @return self
      */
     public function setLocality($locality)
     {
@@ -56,6 +58,7 @@ class OpenIdAddress extends PayPalModel
      * State, province, prefecture or region component.
      *
      * @param string $region
+     * @return self
      */
     public function setRegion($region)
     {
@@ -77,6 +80,7 @@ class OpenIdAddress extends PayPalModel
      * Zip code or postal code component.
      *
      * @param string $postal_code
+     * @return self
      */
     public function setPostalCode($postal_code)
     {
@@ -98,6 +102,7 @@ class OpenIdAddress extends PayPalModel
      * Country name component.
      *
      * @param string $country
+     * @return self
      */
     public function setCountry($country)
     {