Add documentation for Abstract Verifier

dmnverifierapi/src/main/java/de/unikoblenz/fgbks/core/dmn/verification/verifier/AbstractVerifier.java

@@ -16,6 +16,10 @@ import org.apache.commons.lang3.time.StopWatch;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
+/**
+ * The abstract verifier is a implementation staring point for the {@link Verifier} interface and
+ * contains the needed components for the final implementation of verifiers.
+ */
 public abstract class AbstractVerifier implements Verifier {
 
   protected final Logger LOGGER = LoggerFactory.getLogger(getClass().getSimpleName());
@@ -32,6 +36,13 @@ public abstract class AbstractVerifier implements Verifier {
     return verificationType;
   }
 
+  /**
+   * Load the configuration, which contains the necessary information for the verifier. E.g. the dmn
+   * model.
+   *
+   * @param configuration the configuration object
+   * @return the current instance of the verifier
+   */
   public final AbstractVerifier withConfiguration(AbstractDmnVerifierConfig configuration) {
     this.verifierConfig = Validate.notNull(configuration);
     this.dmnObjectContainer =
@@ -81,6 +92,10 @@ public abstract class AbstractVerifier implements Verifier {
     return resultBuilder.withExecutionTime(executionTime).build();
   }
 
+  /**
+   * This method must be implemented by the finial verifiers and should contain the calculation of
+   * the verifier.
+   */
   protected abstract void doVerification();
 
   @Override