Correctly expose properties[] as a collection parameter (#2371)

* Correctly expose properties[] as a collection parameter

* Correctly expose groups[] as collection

Author: idsplus-carlos

src/Serializer/Filter/GroupFilter.php

@@ -69,6 +69,7 @@ public function getDescription(string $resourceClass): array
             "$this->parameterName[]" => [
                 'property' => null,
                 'type' => 'string',
+                'is_collection' => true,
                 'required' => false,
             ],
         ];

src/Serializer/Filter/PropertyFilter.php

@@ -71,6 +71,7 @@ public function getDescription(string $resourceClass): array
             "$this->parameterName[]" => [
                 'property' => null,
                 'type' => 'string',
+                'is_collection' => true,
                 'required' => false,
             ],
         ];

tests/Serializer/Filter/GroupFilterTest.php

@@ -118,6 +118,7 @@ public function testGetDescription()
             'custom_groups[]' => [
                 'property' => null,
                 'type' => 'string',
+                'is_collection' => true,
                 'required' => false,
             ],
         ];

tests/Serializer/Filter/PropertyFilterTest.php

@@ -128,6 +128,7 @@ public function testGetDescription()
             'custom_properties[]' => [
                 'property' => null,
                 'type' => 'string',
+                'is_collection' => true,
                 'required' => false,
             ],
         ];