/**
* Returns a copy of the map of this resource's persistent properties. Returns an empty map if
* this resource has no persistent properties.
*
* @return The map containing the persistent properties where the key is the {@link QualifiedName}
* of the property and the value is the {@link String} value of the property.
*/
public Map<String, Serializable> getPersistentProperties() {
ID id = this.getID();
Map<String, Serializable> properties = service.getPersistentProperties(id);
return properties;
}
