code: public static boolean isArray (@Nullable final Object aObject)
    {
      return aObject != null && ClassHelper.isArrayClass (aObject.getClass ());
    }
docs: Check if the passed object is an array or not.
  
  @param aObject
  The object to be checked. May be <code>null</code>.
  @return <code>true</code> if the passed object is not <code>null</code> and
  represents an array.