config/pmd-main.xml

<?xml version="1.0"?>
<ruleset name="PMD ruleset for Checkstyle"
         xmlns="http://pmd.sourceforge.net/ruleset/2.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://pmd.sourceforge.net/ruleset/2.0.0
         http://pmd.sourceforge.net/ruleset_2_0_0.xsd">
    <description>
        PMD ruleset for Checkstyle main code
    </description>
    <exclude-pattern>.*/src/it/.*</exclude-pattern>
    <exclude-pattern>.*/src/test/.*</exclude-pattern>
    <rule ref="config/pmd.xml"/>

    <rule ref="rulesets/java/unusedcode.xml/UnusedPrivateMethod">
        <properties>
            <!-- generates false-positives on private methods called within a file -->
            <property name="violationSuppressXPath" value="
            //MethodDeclaration[@Name='countTokens' and ../../..[@Image='DescendantTokenCheck']]
            | //MethodDeclaration[@Name='getHashCodeBasedOnObjectContent' and ../../..[@Image='PropertyCacheFile']]"/>
        </properties>
    </rule>
    <rule ref="rulesets/java/basic.xml/CollapsibleIfStatements">
        <properties>
            <!-- till https://github.com/hcoles/pitest/issues/377 -->
            <property name="violationSuppressXPath" value="//MethodDeclaration[@Name='main' and ../../..[@Image='Main']]"/>
        </properties>
    </rule>

</ruleset>