How should I exclude a certain dependency for all ...

# gradle

[Marcel Overdijk]

How should I exclude a certain dependency for all configuration like this Gradle groovy:

configurations.all {
    exclude group: 'org.slf4j', module: 'jul-to-slf4j'
}

I tried something like:

configurations {
    all { configuration ->
        configuration.exclude("org.slf4j", "jul-to-slf4j")
    }
}

but it does't work, IntelliJ complain returning a Boolean instead of Unit...