PhpCsFixer\Fixer\ReturnNotation\NoUselessReturnFixer::fixFunction PHP Method

    private function fixFunction(Tokens $tokens, $start, $end)
    {
        for ($index = $end; $index > $start; --$index) {
            if (!$tokens[$index]->isGivenKind(T_RETURN)) {
                continue;
            }
            $nextAt = $tokens->getNextMeaningfulToken($index);
            if (!$tokens[$nextAt]->equals(';')) {
                continue;
            }
            if ($tokens->getNextMeaningfulToken($nextAt) !== $end) {
                continue;
            }
            $previous = $tokens->getPrevMeaningfulToken($index);
            if ($tokens[$previous]->equalsAny(array(array(T_ELSE), ')'))) {
                continue;
            }
            $tokens->clearTokenAndMergeSurroundingWhitespace($index);
            $tokens->clearTokenAndMergeSurroundingWhitespace($nextAt);
        }
    }