Add missing copyright headers

Autoported commit.
Original commit hash: [134882705]

Author: iText-CI

itext.tests/itext.layout.tests/itext/layout/FlexContainerTest.cs

@@ -1,3 +1,25 @@
+/*
+This file is part of the iText (R) project.
+Copyright (c) 1998-2021 iText Group NV
+Authors: iText Software.
+
+This program is offered under a commercial and under the AGPL license.
+For commercial licensing, contact us at https://itextpdf.com/sales.  For AGPL licensing, see below.
+
+AGPL licensing:
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU Affero General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program 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 Affero General Public License for more details.
+
+You should have received a copy of the GNU Affero General Public License
+along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
 using System;
 using iText.IO.Image;
 using iText.Kernel.Colors;
@@ -611,11 +633,11 @@ private static Div CreateNewDiv() {
         }
 
         private static Div CreateFlexContainer() {
-            return new _Div_757();
+            return new _Div_779();
         }
 
-        private sealed class _Div_757 : Div {
-            public _Div_757() {
+        private sealed class _Div_779 : Div {
+            public _Div_779() {
             }
 
             protected internal override IRenderer MakeNewRenderer() {

itext.tests/itext.layout.tests/itext/layout/renderer/FlexContainerRendererTest.cs

@@ -1,3 +1,25 @@
+/*
+This file is part of the iText (R) project.
+Copyright (c) 1998-2021 iText Group NV
+Authors: iText Software.
+
+This program is offered under a commercial and under the AGPL license.
+For commercial licensing, contact us at https://itextpdf.com/sales.  For AGPL licensing, see below.
+
+AGPL licensing:
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU Affero General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program 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 Affero General Public License for more details.
+
+You should have received a copy of the GNU Affero General Public License
+along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
 using iText.Layout.Borders;
 using iText.Layout.Element;
 using iText.Layout.Properties;

port-hash

@@ -1 +1 @@
-41a612275ace146626c607d62b0d4348b90398c5
+134882705ad622a26c22ec85d11d8937d2593029