some cleanup

src/main/java/de/kosit/validationtool/api/Configuration.java

@@ -12,15 +12,15 @@ import de.kosit.validationtool.impl.Scenario;
 /**
  * Configuration of the actual {@link Check} instance. This is an interface and can be implemented by custom
  * configuration classes. There are two implementations supported out of the box:
- * 
+ *
  * <ol>
  * <li>{@link ConfigurationLoader} implements loading {@link Check} configurations from a scenario.xml file</li>
  * <li>Using a builder style api {@link de.kosit.validationtool.config.ConfigurationBuilder}to configure the
  * {@link Check}</li>
  * </ol>
- * 
+ * <p>
  * Both methods can be used via convinience methods. See below.
- * 
+ *
  * @author Andreas Penski
  */
 
@@ -28,51 +28,57 @@ public interface Configuration {
 
     /**
      * Returns a list of configured scenarios.
-     * 
+     *
      * @return the list of scenarios
      */
     List<Scenario> getScenarios();
 
     /**
      * Returns the configured fallback scenario to use, in case no configured scenario match.
-     * 
+     *
      * @return the fallback scenario
      */
     Scenario getFallbackScenario();
 
     /**
      * Returns the author of this configuration.
-     * 
+     *
      * @return the author
      */
     String getAuthor();
 
     /**
      * Returns the name of the specification
-     * 
+     *
      * @return the name
      */
     String getName();
 
     /**
      * The creation date of the config
-     * 
+     *
      * @return the date
      */
     String getDate();
 
+    /**
+     * Add some additional parameters to the validator configuration. Parameter usage depends on actual implementation of
+     * {@link Check}
+     *
+     * @return
+     */
     Map<String, Object> getAdditionalParameters();
 
     /**
      * The content repository including resolving strategies.
-     * 
+     *
      * @return the configured {@link ContentRepository}
      */
     ContentRepository getContentRepository();
 
     /**
      * Loads an XML based scenario definition from the file specified via URI.
-     * 
+     *
      * @param scenarioDefinition the XML file with scenario definition
      * @return the loaded configuration
      */
@@ -93,7 +99,7 @@ public interface Configuration {
 
     /**
      * Creates a {@link Configuration} based on a builder style API using {@link ConfigurationBuilder}
-     * 
+     *
      * @return the Builder
      */
     static ConfigurationBuilder create() {