/**
  * Gets the full class name for the given entity
  *
  * @param string $entityName The name of the entity. Can be Bundle:Entity or full class name
  *
  * @throws \InvalidArgumentException
  *
  * @return string The full class name
  */
 public function getEntityClass($entityName)
 {
     $parts = explode(':', $entityName);
     if (count($parts) <= 1) {
         // The given entity name is not in bundle:entity format. Suppose that it is the full class name
         return $entityName;
     } elseif (count($parts) > 2) {
         throw new \InvalidArgumentException(sprintf('Incorrect entity name: %s. Expected the full class name or bundle:entity.', $entityName));
     }
     return $this->doctrine->getAliasNamespace($parts[0]) . '\\' . $parts[1];
 }