private function processReturnTypeToken(File $phpcsFile, $stackPtr)
    {
        $returnTypeHint   = $this->getReturnTypeHintName($phpcsFile, $stackPtr);
        $returnTypeHint   = ltrim($returnTypeHint, '\\');
        $returnTypeHintLc = strtolower($returnTypeHint);

        if (isset($this->newClasses[$returnTypeHintLc]) === false) {
            return;
        }

        // Still here ? Then this is a return type declaration using a new class.
        $itemInfo = array(
            'name'   => $returnTypeHint,
            'nameLc' => $returnTypeHintLc,
        );
        $this->handleFeature($phpcsFile, $stackPtr, $itemInfo);
    }