Improvements to AI comments :)

docs/Changelog.md

@@ -98,13 +98,20 @@
 * [#7021](https://github.com/TouK/nussknacker/pull/7021) Definitions service can return definition without UI config
 * [#7010](https://github.com/TouK/nussknacker/pull/7010) Dynamic access allowed via indexer operator (`[]`) on expressions typed as `Unknown`
 * [#7063](https://github.com/TouK/nussknacker/pull/7063) Introduce conversion extension methods in SpeL:
-  * is(className)/to(className)/toOrNull(className)
-  * isBoolean/toBoolean/toBooleanOrNull
-  * isLong/toLong/toLongOrNull
-  * isDouble/toDouble/toDoubleOrNull
-  * isBigDecimal/toBigDecimal/toBigDecimalOrNull
-  * isList/toList/toListOrNull
-  * isMap/toMap/toMapOrNull - the list of key-value pairs or unknown map can be converted to a map.
+  * canBe(className)/to(className)/toOrNull(className)
+  * canBeBoolean/toBoolean/toBooleanOrNull
+  * canBeLong/toLong/toLongOrNull
+  * canBeDouble/toDouble/toDoubleOrNull
+  * canBeBigDecimal/toBigDecimal/toBigDecimalOrNull
+  * canBeList/toList/toListOrNull
+  * canBeMap/toMap/toMapOrNull - the list of key-value pairs or unknown map can be converted to a map.
+* [#7106](https://github.com/TouK/nussknacker/pull/7106) Fix an issue where pressing the “Esc” key did not remove focus from input fields in dialogs, which prevented the dialog window from closing
+* [#7002](https://github.com/TouK/nussknacker/pull/7002) Resolve an issue with union nodes output expression when nodes were copied and pasted
+* [#6994](https://github.com/TouK/nussknacker/pull/6994) Fix styling issues for form checkboxes in Firefox
+* [#6721](https://github.com/TouK/nussknacker/pull/6721) Provide a popover to display additional information about count
+* [#7099](https://github.com/TouK/nussknacker/pull/7099) Provide an option to embedded video to the markdown
+* [#7102](https://github.com/TouK/nussknacker/pull/7102) Introduce a new UI to defining aggregations within nodes
+* [#7147](https://github.com/TouK/nussknacker/pull/7147) Fix redundant "ParameterName(...)" wrapper string in exported PDFs in nodes details 
 
 ## 1.17
 

utils/test-utils/src/main/scala/pl/touk/nussknacker/test/RandomImplicits.scala

@@ -15,8 +15,10 @@ object RandomImplicits {
     def nextString(): String =
       randomString(MinStringLength + rand.nextInt(MaxStringLength - MinStringLength))
 
-    def randomString(length: Int): String =
-      (0 until length).map(_ => AllowedStringLetters(rand.nextInt(AllowedStringLetters.length))).mkString
+    def randomString(length: Int): String = {
+      require(length >= 0, "Length must be non-negative") ∑
+        (0 until length).map(_ => AllowedStringLetters(rand.nextInt(AllowedStringLetters.length))).mkString
+    }
 
   }