code: public boolean isNodeType(final InternalQName testTypeName, final InternalQName primaryType,
        final InternalQName[] mixinTypes)
     {
  
        if (this.nodeTypeRepository.isNodeType(testTypeName, primaryType))
        {
           return true;
        }
  
        if (this.nodeTypeRepository.isNodeType(testTypeName, mixinTypes))
        {
           return true;
        }
  
        return false;
     }
docs: {@inheritDoc}