src/Fixer/Whitespace/CompactNullableTypehintFixer.php
protected function applyFix(\SplFileInfo $file, Tokens $tokens)
    {
        static $typehintKinds = [
            CT::T_ARRAY_TYPEHINT,
            T_CALLABLE,
            T_NS_SEPARATOR,
            T_STRING,
        ];

        for ($index = $tokens->count() - 1; $index >= 0; --$index) {
            if (!$tokens[$index]->isGivenKind(CT::T_NULLABLE_TYPE)) {
                continue;
            }

            // remove whitespaces only if there are only whitespaces
            // between '?' and the variable type
            if (
                $tokens[$index + 1]->isWhitespace() &&
                $tokens[$index + 2]->isGivenKind($typehintKinds)
            ) {
                $tokens->removeTrailingWhitespace($index);
            }
        }
    }
protected function applyFix(\SplFileInfo $file, Tokens $tokens)
    {
        static $typehintKinds = [
            CT::T_ARRAY_TYPEHINT,
            T_CALLABLE,
            T_NS_SEPARATOR,
            T_STRING,
        ];

        for ($index = $tokens->count() - 1; $index >= 0; --$index) {
            if (!$tokens[$index]->isGivenKind(CT::T_NULLABLE_TYPE)) {
                continue;
            }

            // remove whitespaces only if there are only whitespaces
            // between '?' and the variable type
            if (
                $tokens[$index + 1]->isWhitespace() &&
                $tokens[$index + 2]->isGivenKind($typehintKinds)
            ) {
                $tokens->removeTrailingWhitespace($index);
            }
        }
    }
{@inheritdoc}