--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/env/lib/python3.7/site-packages/schema_salad/java/main_utils/OneOrListOf.java	Sat May 02 07:14:21 2020 -0400
@@ -0,0 +1,48 @@
+package ${package}.utils;
+
+import java.util.List;
+import java.util.Optional;
+
+public class OneOrListOf<T> {
+    private Optional<T> object;
+    private Optional<List<T>> objects;
+
+    private OneOrListOf(final T object, final List<T> objects) {
+        this.object = Optional.ofNullable(object);
+        this.objects = Optional.ofNullable(objects);
+    }
+
+    public static <T> OneOrListOf<T> oneOf(T object) {
+        return new OneOrListOf(object, null);
+    }
+
+    public static <T> OneOrListOf<T> listOf(List<T> objects) {
+        assert objects != null;
+        return new OneOrListOf(null, objects);
+    }
+
+    public boolean isOne() {
+        return this.getOneOptional().isPresent();
+    }
+
+    public boolean isList() {
+        return this.getListOptional().isPresent();
+    }
+
+    public Optional<T> getOneOptional() {
+        return this.object;
+    }
+    
+    public Optional<List<T>> getListOptional() {
+        return this.objects;
+    }
+
+    public T getOne() {
+        return this.getOneOptional().get();
+    }
+
+    public List<T> getList() {
+        return this.getListOptional().get();
+    }
+
+}