wrap long supertype lists
diff --git a/src/Kotlin/KotlinLanguageService.kt b/src/Kotlin/KotlinLanguageService.kt
index cc38d6d..6f24c96 100644
--- a/src/Kotlin/KotlinLanguageService.kt
+++ b/src/Kotlin/KotlinLanguageService.kt
@@ -254,6 +254,7 @@
             symbol(":")
             nbsp()
             renderList(supertypes) {
+                indentedSoftLineBreak()
                 renderType(it)
             }
         }