Adjust functions to conform with unmodifiable lists

Author: ramsessanchez

src/main/java/com/microsoft/graph/http/BaseCollectionRequest.java

@@ -216,7 +216,7 @@ public List<Option> getOptions() {
      */
     public void addQueryOption(@Nonnull final QueryOption option) {
         Objects.requireNonNull(option, "parameter option cannot be null");
-        baseRequest.getQueryOptions().add(option);
+        baseRequest.addQueryOption(option);
     }
 
     /**
@@ -302,7 +302,7 @@ protected void addCountOption(final boolean value) {
      */
     public void addFunctionOption(@Nonnull final FunctionOption option) {
         Objects.requireNonNull(option, "parameter option cannot be null");
-        baseRequest.getFunctionOptions().add(option);
+        baseRequest.addFunctionOption(option);
     }
 
     /**

src/main/java/com/microsoft/graph/http/BaseRequest.java

@@ -375,7 +375,7 @@ public List<Option> getOptions() {
      */
     public void addQueryOption(@Nonnull final QueryOption option) {
         Objects.requireNonNull(option, "parameter option cannot be null");
-        getQueryOptions().add(option);
+        queryOptions.add(option);
     }
 
     /**
@@ -385,7 +385,7 @@ public void addQueryOption(@Nonnull final QueryOption option) {
      */
     public void addFunctionOption(@Nonnull final FunctionOption option) {
         Objects.requireNonNull(option, "parameter option cannot be null");
-        getFunctionOptions().add(option);
+        functionOptions.add(option);
     }
 
     /**