[INTERNAL] lib/processors/jsdoc: return value of a 0..1 association c…

…an be null

Cherry picked from SAP/openui5@9999bc827

lib/processors/jsdoc/lib/ui5/plugin.cjs

@@ -21,7 +21,7 @@
  *   experimental
  *
  *   final
- * 
+ *
  *   hideconstructor
  *
  *   interface
@@ -32,7 +32,7 @@
  *
  *   ui5-restricted
  *
- * 
+ *
  *
  * It furthermore listens to the following JSDoc3 events to implement additional functionality
  *
@@ -2137,7 +2137,7 @@ function createAutoDoc(oClassInfo, classComment, doclet, node, parser, filename,
 			"",
 			newStyle && info.doc ? info.doc : "",
 			"",
-			"@returns {sap.ui.core.ID" + (info.cardinality === "0..n" ? "[]" : "") + "}",
+			`@returns {${info.cardinality === "0..n" ? "sap.ui.core.ID[]" : "sap.ui.core.ID|null"}}`,
 			info.since ? "@since " + info.since : "",
 			info.deprecation ? "@deprecated " + info.deprecation : "",
 			info.experimental ? "@experimental " + info.experimental : "",