[issue #2221] simplified configuration for @Singular-generated plural form nullchecks.

test/transform/resource/after-delombok/CheckerFrameworkBuilder.java

@@ -62,7 +62,9 @@ class CheckerFrameworkBuilder {
 		@org.checkerframework.checker.builder.qual.ReturnsReceiver
 		@java.lang.SuppressWarnings("all")
 		public CheckerFrameworkBuilder.CheckerFrameworkBuilderBuilder names(final java.util.Collection<? extends String> names) {
-			if (names == null) throw new java.lang.NullPointerException("names cannot be null");
+			if (names == null) {
+				throw new java.lang.NullPointerException("names cannot be null");
+			}
 			if (this.names == null) this.names = new java.util.ArrayList<String>();
 			this.names.addAll(names);
 			return this;