Check null.

Lucie Votypkova · Lucie Votypkova · commit f89401e638fc · 2019-07-24T13:29:50.000+02:00
diff --git a/job-dsl-plugin/src/main/groovy/javaposse/jobdsl/plugin/actions/GeneratedObjectsRunAction.java b/job-dsl-plugin/src/main/groovy/javaposse/jobdsl/plugin/actions/GeneratedObjectsRunAction.java
@@ -48,7 +48,11 @@ public Collection<T> getModifiedObjects() {
     }
 
     public void addModifiedObjects(Collection<T> modifiedObjects) {
-        this.modifiedObjects.addAll(modifiedObjects);
+        if (this.modifiedObjects == null) {
+            this.modifiedObjects = new LinkedHashSet<>(modifiedObjects);
+        } else {
+            this.modifiedObjects.addAll(modifiedObjects);
+        }
     }
 
 }

Original file line number	Diff line number	Diff line change
`@@ -48,7 +48,11 @@ public Collection<T> getModifiedObjects() {`
`48`	`48`	`}`
`49`	`49`
`50`	`50`	`public void addModifiedObjects(Collection<T> modifiedObjects) {`
`51`		`- this.modifiedObjects.addAll(modifiedObjects);`
	`51`	`+ if (this.modifiedObjects == null) {`
	`52`	`+ this.modifiedObjects = new LinkedHashSet<>(modifiedObjects);`
	`53`	`+ } else {`
	`54`	`+ this.modifiedObjects.addAll(modifiedObjects);`
	`55`	`+ }`
`52`	`56`	`}`
`53`	`57`
`54`	`58`	`}`