diff -r 1d48b38ca349 -r 9365c7fb0240 src/main/kotlin/de/uapcore/lightpit/dao/DataAccessObject.kt
--- a/src/main/kotlin/de/uapcore/lightpit/dao/DataAccessObject.kt	Sun Oct 10 15:12:12 2021 +0200
+++ b/src/main/kotlin/de/uapcore/lightpit/dao/DataAccessObject.kt	Sat Nov 27 10:44:17 2021 +0100
@@ -82,5 +82,8 @@
     fun insertHistoryEvent(issue: Issue, newId: Int = 0)
     fun insertHistoryEvent(issueComment: IssueComment, newId: Int = 0)
 
+    /**
+     * Lists the issue history of the project with [projectId] for the past [days].
+     */
     fun listIssueHistory(projectId: Int, days: Int): List<IssueHistoryEntry>
 }