src/includes/classes/Core/Utils/WsVersion.php
public function isValidStable(string $version): bool
    {
        if (!$version) {
            return false; // Nope.
        }
        return (bool) preg_match($this::WS_VERSION_REGEX_VALID_STABLE, $version);
    }
public function isValidStable(string $version): bool
    {
        if (!$version) {
            return false; // Nope.
        }
        return (bool) preg_match($this::WS_VERSION_REGEX_VALID_STABLE, $version);
    }
Is it a valid WS stable version?

@since 150424 Initial release.

@param string $version Input version.

@return bool `TRUE` if valid.