Load services through class loader of caller

The caller supplies the service type using which `JavaSourceFile#service()` can instantiate a service of the desired type and also make sure it gets loaded using the corresponding class loader.

rewrite-java/src/main/java/org/openrewrite/java/tree/JavaSourceFile.java

@@ -22,6 +22,7 @@
 import org.openrewrite.java.service.AutoFormatService;
 import org.openrewrite.java.service.ImportService;
 
+import java.lang.reflect.InvocationTargetException;
 import java.nio.file.Path;
 import java.util.List;
 
@@ -55,14 +56,19 @@ public interface JavaSourceFile extends J {
     SourceFile withSourcePath(Path path);
 
     @Incubating(since = "8.2.0")
-    @SuppressWarnings("unchecked")
     default <S> S service(Class<S> service) {
-        if (ImportService.class.getName().equals(service.getName())) {
-            return (S) new ImportService();
-        } else if (AutoFormatService.class.getName().equals(service.getName())) {
-            return (S) new AutoFormatService();
+        try {
+            // use name indirection due to possibility of multiple class loaders being used
+            if (ImportService.class.getName().equals(service.getName())) {
+                return service.getConstructor().newInstance();
+            } else if (AutoFormatService.class.getName().equals(service.getName())) {
+                return service.getConstructor().newInstance();
+            } else {
+                throw new UnsupportedOperationException("Service " + service + " not supported");
+            }
+        } catch (InstantiationException | IllegalAccessException | InvocationTargetException | NoSuchMethodException e) {
+            throw new RuntimeException(e);
         }
-        throw new UnsupportedOperationException("Service " + service + " not supported");
     }
 
     interface Padding {