vaadin-framework/checkstyle/suppressions.xml

<?xml version="1.0"?>

<!DOCTYPE suppressions PUBLIC
"-//Puppy Crawl//DTD Suppressions 1.1//EN"
"http://www.puppycrawl.com/dtds/suppressions_1_1.dtd">

<suppressions>
    <suppress files="[/\\]target[/\\]" checks=".*"/>
</suppressions>