src/Contao/View/Contao2BackendView/ActionHandler/MultipleHandler/SelectPropertyAllHandler.php
private function isPropertyAllowedByOverride(array $extra, EnvironmentInterface $environment)
    {
        return ((true === $extra['unique']) || $extra['readonly'] || (true === $extra['doNotOverrideMultiple']))
               && ('override' === $environment->getInputProvider()->getParameter('mode'));
    }
private function isPropertyAllowedByOverride(array $extra, EnvironmentInterface $environment)
    {
        return ((true === $extra['unique']) || $extra['readonly'] || (true === $extra['doNotOverrideMultiple']))
               && ('override' === $environment->getInputProvider()->getParameter('mode'));
    }
private function isPropertyAllowedByOverride ( array $ extra , EnvironmentInterface $ environment ) { return ( ( true === $ extra [ 'unique' ] ) || $ extra [ 'readonly' ] || ( true === $ extra [ 'doNotOverrideMultiple' ] ) ) && ( 'override' === $ environment -> getInputProvider ( ) -> getParameter ( 'mode' ) ) ; }
Is property allowed by override mode.

@param array                $extra       The extra attributes.
@param EnvironmentInterface $environment The environment.

@return bool
Is property allowed by override mode .