add a custom FindDataImpl for browsedefinitions

src/app/core/shared/browse-definition.model.ts

@@ -0,0 +1,16 @@
+import { autoserialize } from 'cerialize';
+import { CacheableObject } from '../cache/cacheable-object.model';
+
+/**
+ * Base class for BrowseDefinition models
+ */
+export abstract class BrowseDefinition extends CacheableObject {
+
+  @autoserialize
+  id: string;
+
+  /**
+   * Get the render type of the BrowseDefinition model
+   */
+  abstract getRenderType(): string;
+}