Update src/main/java/org/jenkinsci/plugins/workflow/steps/StepDescrip…

…tor.java

Co-authored-by: Jesse Glick <jglick@cloudbees.com>

src/main/java/org/jenkinsci/plugins/workflow/steps/StepDescriptor.java

@@ -65,7 +65,7 @@ public abstract class StepDescriptor extends Descriptor<Step> {
      * if your step cannot trivially handle a null value of a given kind, list that type here.
      * The Pipeline execution engine will then signal a user error before even starting your step if called in an inappropriate context.
      * For example, a step requesting a {@link Launcher} may only be run inside a {@code node {…}} block.
-     * @return typically a {@link Collections#unmodifiableSet(Set)} with context types like {@link TaskListener} or {@link Run} or {@link FilePath}
+     * @return a set of context types like {@link TaskListener} or {@link Run} or {@link FilePath}
      */
     public abstract Set<? extends Class<?>> getRequiredContext();