87382: fixing circular dependencies

src/app/core/cache/cacheable-object.model.ts

@@ -0,0 +1,22 @@
+/* tslint:disable:max-classes-per-file */
+import { HALResource } from '../shared/hal-resource.model';
+import { HALLink } from '../shared/hal-link.model';
+import { TypedObject } from './typed-object.model';
+
+/**
+ * An interface to represent objects that can be cached
+ *
+ * A cacheable object should have a self link
+ */
+export class CacheableObject extends TypedObject implements HALResource {
+  uuid?: string;
+  handle?: string;
+  _links: {
+    self: HALLink;
+  };
+  // isNew: boolean;
+  // dirtyType: DirtyType;
+  // hasDirtyAttributes: boolean;
+  // changedAttributes: AttributeDiffh;
+  // save(): void;
+}