covariant params in replaceDocuments and insertDocuments

Author: rashtao

core/src/main/java/com/arangodb/ArangoCollection.java

@@ -149,7 +149,7 @@ <T> MultiDocumentEntity<DocumentCreateEntity<T>> insertDocuments(
      * Documentation</a>
      */
     <T> MultiDocumentEntity<DocumentCreateEntity<T>> insertDocuments(
-            Collection<T> values, DocumentCreateOptions options, Class<T> type);
+            Collection<? extends T> values, DocumentCreateOptions options, Class<T> type);
 
     /**
      * Bulk imports the given values into the collection.
@@ -334,7 +334,7 @@ <T> MultiDocumentEntity<DocumentUpdateEntity<T>> replaceDocuments(
      * Documentation</a>
      */
     <T> MultiDocumentEntity<DocumentUpdateEntity<T>> replaceDocuments(
-            Collection<T> values, DocumentReplaceOptions options, Class<T> type);
+            Collection<? extends T> values, DocumentReplaceOptions options, Class<T> type);
 
     /**
      * Partially updates the document identified by document-key. The value must contain a document with the attributes

core/src/main/java/com/arangodb/ArangoDB.java

@@ -276,7 +276,7 @@ public interface ArangoDB extends ArangoSerdeAccessor {
      * @param type    Deserialization target type for the response body (POJO or {@link com.arangodb.util.RawData})
      * @return response
      */
-    <T, U> Response<U> execute(Request<T> request, Class<U> type);
+    <T> Response<T> execute(Request<?> request, Class<T> type);
 
     /**
      * Returns the server logs

core/src/main/java/com/arangodb/internal/ArangoCollectionImpl.java

@@ -96,7 +96,7 @@ public <T> MultiDocumentEntity<DocumentCreateEntity<T>> insertDocuments(
     }
 
     @Override
-    public <T> MultiDocumentEntity<DocumentCreateEntity<T>> insertDocuments(Collection<T> values,
+    public <T> MultiDocumentEntity<DocumentCreateEntity<T>> insertDocuments(Collection<? extends T> values,
                                                                             DocumentCreateOptions options,
                                                                             Class<T> type) {
         return executor
@@ -210,7 +210,7 @@ public <T> MultiDocumentEntity<DocumentUpdateEntity<T>> replaceDocuments(
     }
 
     @Override
-    public <T> MultiDocumentEntity<DocumentUpdateEntity<T>> replaceDocuments(Collection<T> values,
+    public <T> MultiDocumentEntity<DocumentUpdateEntity<T>> replaceDocuments(Collection<? extends T> values,
                                                                              DocumentReplaceOptions options,
                                                                              Class<T> type) {
         return executor.execute(replaceDocumentsRequest(values, options), replaceDocumentsResponseDeserializer(type));

core/src/main/java/com/arangodb/internal/ArangoDBImpl.java

@@ -179,7 +179,7 @@ public void grantDefaultCollectionAccess(final String user, final Permissions pe
     }
 
     @Override
-    public <T, U> Response<U> execute(Request<T> request, Class<U> type) {
+    public <T> Response<T> execute(Request<?> request, Class<T> type) {
         return executor.execute(executeRequest(request), responseDeserializer(type));
     }