Disable count() for resources for which API doesn't support count

Author: AMagicHarry

Diff for: README.md

@@ -319,7 +319,7 @@ $shopify->Customer->search("Bob country:United States");
 #### Custom Actions List
 The custom methods are specific to some resources which may not be available for other resources.  It is recommended that you see the details in the related Shopify API Reference page about each action. We will just list the available actions here with some brief info. each action name is linked to an example in Shopify API Reference which has more details information.
 
-- _(Any resource type)_ ->
+- _(Any resource type except ApplicationCharge, CarrierService, FulfillmentService, Location, Policy, RecurringApplicationCharge, ShippingZone, Shop, Theme)_ ->
     - [count()](https://help.shopify.com/api/reference/product#count)
     Get a count of all the resources.
     Unlike all other actions, this function returns an integer value.

Diff for: lib/ApplicationCharge.php

@@ -16,4 +16,9 @@ class ApplicationCharge extends ShopifyResource
      * @inheritDoc
      */
     protected $resourceKey = 'application_charge';
+
+    /**
+     * @inheritDoc
+     */
+    public $countEnabled = false;
 }

Diff for: lib/CarrierService.php

@@ -16,4 +16,9 @@ class CarrierService extends ShopifyResource
      * @inheritDoc
      */
     protected $resourceKey = 'carrier_service';
+
+    /**
+     * @inheritDoc
+     */
+    public $countEnabled = false;
 }

Diff for: lib/Customer.php

@@ -34,7 +34,7 @@ class Customer extends ShopifyResource
     /**
      * @inheritDoc
      */
-    protected $searchEnabled = true;
+    public $searchEnabled = true;
 
     /**
      * @inheritDoc

Diff for: lib/FulfillmentService.php

@@ -16,4 +16,9 @@ class FulfillmentService extends ShopifyResource
      * @inheritDoc
      */
     protected $resourceKey = 'fulfillment_service';
+
+    /**
+     * @inheritDoc
+     */
+    public $countEnabled = false;
 }

Diff for: lib/GiftCard.php

@@ -28,7 +28,7 @@ class GiftCard extends ShopifyResource
     /**
      * @inheritDoc
      */
-    protected $searchEnabled = true;
+    public $searchEnabled = true;
 
     /**
      * Disable a gift card.

Diff for: lib/Location.php

@@ -17,6 +17,11 @@ class Location extends ShopifyResource
      */
     protected $resourceKey = 'location';
 
+    /**
+     * @inheritDoc
+     */
+    public $countEnabled = false;
+
     /**
      * @inheritDoc
      */

Diff for: lib/Policy.php

@@ -17,6 +17,11 @@ class Policy extends ShopifyResource
      */
     protected $resourceKey = 'policy';
 
+    /**
+     * @inheritDoc
+     */
+    public $countEnabled = false;
+
     /**
      * @inheritDoc
      */

Diff for: lib/RecurringApplicationCharge.php

@@ -32,6 +32,11 @@ class RecurringApplicationCharge extends ShopifyResource
      */
     protected $resourceKey = 'recurring_application_charge';
 
+    /**
+     * @inheritDoc
+     */
+    public $countEnabled = false;
+
     /**
      * @inheritDoc
      */

Diff for: lib/ShippingZone.php

@@ -17,6 +17,11 @@ class ShippingZone extends ShopifyResource
      */
     protected $resourceKey = 'shipping_zone';
 
+    /**
+     * @inheritDoc
+     */
+    public $countEnabled = false;
+
     /**
      * @inheritDoc
      */

Diff for: lib/Shop.php

@@ -17,6 +17,11 @@ class Shop extends ShopifyResource
      */
     protected $resourceKey = 'shop';
 
+    /**
+     * @inheritDoc
+     */
+    public $countEnabled = false;
+
     /**
      * @inheritDoc
      */

Diff for: lib/ShopifyResource.php

@@ -61,7 +61,14 @@ abstract class ShopifyResource
      *
      * @var boolean
      */
-    protected $searchEnabled = false;
+    public $searchEnabled = false;
+
+    /**
+     * If count is enabled for the resource
+     *
+     * @var boolean
+     */
+    public $countEnabled = true;
 
     /**
      * If the resource is read only. (No POST / PUT / DELETE actions)
@@ -314,6 +321,10 @@ public function get($urlParams = array(), $url = null, $dataKey = null)
      */
     public function count($urlParams = array())
     {
+        if (!$this->countEnabled) {
+            throw new SdkException("Count is not available for " . $this->getResourceName());
+        }
+
         $url = $this->generateUrl($urlParams, 'count');
 
         return $this->get(array(), $url, 'count');

Diff for: lib/Theme.php

@@ -26,6 +26,11 @@ class Theme extends ShopifyResource
      */
     public $resourceKey = 'theme';
 
+    /**
+     * @inheritDoc
+     */
+    public $countEnabled = false;
+
     /**
      * @inheritDoc
      */