interface CheckstyleConfig {
    /**
     * File mask used to find XML checkstyle reports.
     */
    fileMask: string;
    /**
     * If set to true, the severity will be used to switch between the different message formats (message, warn, fail).
     */
    reportSeverity: boolean;
    /**
     * If set to true, only issues will be reported that are contained in the current changeset (line comparison).
     * If set to false, all issues that are in modified files will be reported.
     */
    requireLineModification: boolean;
    /**
     * Optional: Sets a prefix foreach violation message.
     * This can be useful if there are multiple reports being parsed to make them distinguishable.
     */
    outputPrefix?: string;
    /**
     * Optional: Override the violation formatter to customize the output message.
     */
    violationFormatter?: ViolationFormatter;
    /**
     * Optional: Sets the root directory of the project. Defaults to the current working directory.
     */
    projectRoot?: string;
    /**
     * Optional: If set to true, it will remove duplicate violations.
     */
    removeDuplicates?: boolean;
}