Implemented referencing cached collection.

Change-Id: I02f2ee84b3f8e50c5632efc9363eb87d97a754f8
diff --git a/src/test/resources/collection/unknown-vc-ref.jsonld b/src/test/resources/collection/unknown-vc-ref.jsonld
new file mode 100644
index 0000000..8c7e80e
--- /dev/null
+++ b/src/test/resources/collection/unknown-vc-ref.jsonld
@@ -0,0 +1,4 @@
+{"collection": {
+    "@type": "koral:docGroupRef",
+    "ref": "https://korap.ids-mannheim.de/@ndiewald/MyCorpus"
+}}
diff --git a/src/test/resources/named-vc/named-vc-free.jsonld b/src/test/resources/named-vc/named-vc-free.jsonld
new file mode 100644
index 0000000..4e8cd83
--- /dev/null
+++ b/src/test/resources/named-vc/named-vc-free.jsonld
@@ -0,0 +1,11 @@
+{"collection": {
+    "name" : "cache-goe",
+    "@type": "koral:doc",
+    "key": "textSigle",
+    "match": "match:eq",
+    "value": [
+        "GOE/AGF/00000",
+        "GOE/AGA/01784"
+    ]
+}}
+