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-rw-r--r--config-application-package/src/main/java/com/yahoo/config/application/PreProcessor.java17
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diff --git a/config-application-package/src/main/java/com/yahoo/config/application/PreProcessor.java b/config-application-package/src/main/java/com/yahoo/config/application/PreProcessor.java
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+// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+package com.yahoo.config.application;
+
+import org.w3c.dom.Document;
+
+import javax.xml.transform.TransformerException;
+import java.io.IOException;
+
+/**
+ * Performs pre-processing of XML document and returns new document that has been processed.
+ *
+ * @author lulf
+ * @since 5.21
+ */
+public interface PreProcessor {
+ public Document process(Document input) throws IOException, TransformerException;
+}