<property name="ignorePattern" value="^ *\* *https?://[^ ]+$" />
  </module>

  <module name="TreeWalker">
    <!-- Make the @SuppressWarnings annotations available to Checkstyle -->
    <module name="SuppressWarningsHolder" />

    <module name="AvoidStarImport" />

    <!-- Unused imports are forbidden -->
    <module name="UnusedImports" />

    <!-- Non-inner classes must be in files that match their names. -->

        <!-- allows suppressing using the //CHECKSTYLE:ON //CHECKSTYLE:OFF -->
        <module name="SuppressionCommentFilter"/>
        <!-- to enable SuppressWarningsFilter -->
        <module name="SuppressWarningsHolder"/>
    </module>
    <module name="RegexpHeader">
        <property name="headerFile" value="${config_loc}/required-header.txt"/>
    </module>
    <module name="FileTabCharacter"/>