Added test and comments

core/src/main/java/org/lflang/generator/GeneratorUtils.java

@@ -2,7 +2,6 @@
 
 import java.util.LinkedHashSet;
 import java.util.Set;
-
 import org.eclipse.core.resources.IResource;
 import org.eclipse.core.resources.ResourcesPlugin;
 import org.eclipse.core.runtime.CoreException;
@@ -80,7 +79,7 @@ public static <T> Iterable<T> findAll(Resource resource, Class<T> nodeType) {
   }
 
   /**
-   * Return the resources that provide the given reactors.
+   * Return the resources that provide the given reactors and their ancestors.
    *
    * @param reactors The reactors for which to find containing resources.
    * @return the resources that provide the given reactors.
@@ -96,7 +95,8 @@ public static Set<Resource> getResources(Iterable<Reactor> reactors) {
     return visited;
   }
 
-  public static void addInheritedResources(Reactor reactor, Set<Resource> resources) {
+  /** Collect all resources associated with reactor through class inheritance. */
+  private static void addInheritedResources(Reactor reactor, Set<Resource> resources) {
     resources.add(reactor.eResource());
     for (var s : reactor.getSuperClasses()) {
       if (!resources.contains(s)) {

test/C/src/target/ImportedCMakeInclude.lf

@@ -1,8 +1,12 @@
 target C {
-    timeout: 1ms
+  timeout: 1 ms
 }
+
 import Foo from "./CMakeInclude.lf"
-reactor Bar extends Foo { }
+
+reactor Bar extends Foo {
+}
+
 main reactor {
   r = new Foo()
-}
+}