/**
  * This method checks if a property is not named in camelCase
  * and emits a rule violation.
  *
  * @param PHP_PMD_AbstractNode $node The context source code node.
  *
  * @return void
  */
 public function apply(PHP_PMD_AbstractNode $node)
 {
     foreach ($node->getProperties() as $property) {
         if (!preg_match('/^\\$[a-zA-Z][a-zA-Z0-9]*$/', $property->getName())) {
             $this->addViolation($node, array($property->getName()));
         }
     }
 }