--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/formats/html/markup/BodyContents.java	Wed Nov 27 13:08:16 2019 +0100
@@ -0,0 +1,78 @@
+/*
+ * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package jdk.javadoc.internal.doclets.formats.html.markup;
+
+import jdk.javadoc.internal.doclets.toolkit.Content;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * A builder for the contents of the BODY element.
+ *
+ *  <p><b>This is NOT part of any supported API.
+ *  If you write code that depends on this, you do so at your own risk.
+ *  This code and its internal interfaces are subject to change or
+ *  deletion without notice.</b>
+ */
+public class BodyContents {
+
+    private List<Content> mainContents = new ArrayList<>();
+    private Content header = HtmlTree.EMPTY;
+    private Content footer = HtmlTree.EMPTY;
+
+    public BodyContents addMainContent(Content content) {
+        mainContents.add(content);
+        return this;
+    }
+
+    public BodyContents setHeader(Content header) {
+        this.header = header;
+        return this;
+    }
+
+    public BodyContents setFooter(Content footer) {
+        this.footer = footer;
+        return this;
+    }
+
+    /**
+     * Returns the HTML for the contents of the BODY element.
+     *
+     * @return the HTML
+     */
+    public Content toContent() {
+        HtmlTree mainTree = HtmlTree.MAIN();
+        mainContents.forEach(mainTree::add);
+        HtmlTree flexHeader = HtmlTree.HEADER().setStyle(HtmlStyle.flexHeader);
+        flexHeader.add(header);
+        HtmlTree flexBox = HtmlTree.DIV(HtmlStyle.flexBox, flexHeader);
+        HtmlTree flexContent = HtmlTree.DIV(HtmlStyle.flexContent, mainTree);
+        flexContent.add(footer);
+        flexBox.add(flexContent);
+        return flexBox;
+    }
+}