Added getLabel() helper function

CloudObjects/SDK/CloudObject.php

@@ -166,4 +166,11 @@ class CloudObject {
         return $this->getString(Constants::PROPERTY_REVISION);
     }
 
+    /**
+     * Get the rdfs:label of the object.
+     */
+    public function getLabel() : ?string {
+        return $this->getString(Constants::RDFS_LABEL);
+    }
+
 }

CloudObjects/SDK/Constants.php

@@ -9,5 +9,6 @@ namespace CloudObjects\SDK;
 class Constants {
 
     const PROPERTY_REVISION = 'coid://cloudobjects.io/isAtRevision';
+    const RDFS_LABEL = 'http://www.w3.org/2000/01/rdf-schema#label';
 
 }