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diff --git a/sangria-lazy/src/main/java/com/tavianator/sangria/lazy/LazyBinding.java b/sangria-lazy/src/main/java/com/tavianator/sangria/lazy/LazyBinding.java
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+/****************************************************************************
+ * Sangria                                                                  *
+ * Copyright (C) 2014 Tavian Barnes <tavianator@tavianator.com>             *
+ *                                                                          *
+ * Licensed under the Apache License, Version 2.0 (the "License");          *
+ * you may not use this file except in compliance with the License.         *
+ * You may obtain a copy of the License at                                  *
+ *                                                                          *
+ * http://www.apache.org/licenses/LICENSE-2.0                               *
+ *                                                                          *
+ * Unless required by applicable law or agreed to in writing, software      *
+ * distributed under the License is distributed on an "AS IS" BASIS,        *
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. *
+ * See the License for the specific language governing permissions and      *
+ * limitations under the License.                                           *
+ ****************************************************************************/
+
+package com.tavianator.sangria.lazy;
+
+import com.google.inject.Key;
+
+/**
+ * SPI for {@link LazyBinder} bindings.
+ *
+ * @author Tavian Barnes (tavianator@tavianator.com)
+ * @version 1.2
+ * @since 1.2
+ */
+public interface LazyBinding<T> {
+    /**
+     * @return The key wrapped by the {@link Lazy Lazy&lt;T&gt;} binding.
+     */
+    Key<T> getTargetKey();
+}