PHP Code Style Fixer: put space between colon and method's return type

Question

Is there a PHP CS Fixer fixer available that will put space between colon and return type? Fixer should correct this signature:

public function modifyFeatureFlags(array $feature_flags):array
{
}

to:

public function modifyFeatureFlags(array $feature_flags): array
{
}

The list of available fixers is long, and I have hard time finding the correct one.

Answer 1

From README.md

return_type_declaration [@Symfony]

There should be one or no space before colon and one space after it in return type declaration.

Try it out

Answer 2

As stated by @keradus, there is return_type_declaration for that.

If you (or anyone else) would like to use a sniff for PHP_CodeSniffer, there is ReturnTypeHintSpacingSniff from slevomat/coding-standard.