diff --git a/base/src/main/java/de/staropensource/sosengine/base/utility/ListFormatter.java b/base/src/main/java/de/staropensource/sosengine/base/utility/ListFormatter.java
index 44da662..8d2c9ac 100644
--- a/base/src/main/java/de/staropensource/sosengine/base/utility/ListFormatter.java
+++ b/base/src/main/java/de/staropensource/sosengine/base/utility/ListFormatter.java
@@ -27,13 +27,14 @@ import java.util.Set;
 
 /**
  * Converts various data types to {@link String}s.
- * This class is unfinished.
  *
- * @since v1-alpha0
+ * @since v1-alpha4
  */
 public final class ListFormatter {
     /**
      * Constructs this class.
+     *
+     * @since v1-alpha4
      */
     public ListFormatter() {}
 
@@ -42,6 +43,7 @@ public final class ListFormatter {
      *
      * @param array array to convert
      * @return formatted string
+     * @since v1-alpha4
      */
     public static @NotNull String formatArray(@NotNull Object[] array) {
         StringBuilder output = new StringBuilder();
@@ -64,6 +66,7 @@ public final class ListFormatter {
      *
      * @param set set to convert
      * @return formatted string
+     * @since v1-alpha4
      */
     public static @NotNull String formatSet(@NotNull Set<?> set) {
         return formatArray(set.toArray());
@@ -74,6 +77,7 @@ public final class ListFormatter {
      *
      * @param list list to convert
      * @return formatted string
+     * @since v1-alpha4
      */
     public static @NotNull String formatList(@NotNull List<?> list) {
         return formatArray(list.toArray());
@@ -84,6 +88,7 @@ public final class ListFormatter {
      *
      * @param map map to convert
      * @return formatted string
+     * @since v1-alpha4
      */
     public static @NotNull String formatMap(@NotNull Map<?, ?> map) {
         StringBuilder output = new StringBuilder();