src/test/resources/com/puppycrawl/tools/checkstyle/main/InputMainConfig-Incorrect.xml

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE module PUBLIC
        "-//Puppy Crawl//DTD Check Configuration 1.1//EN"
        "http://checkstyle.sourceforge.net/dtds/configuration_1_1.dtd">

#<module name="Checker">
    <module name="TreeWalker">
        <module name="TypeName">
            <property name="severity" value="warning"/>
        </module>
    </module>
</module>