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diff --git a/pdf-as-lib/src/main/java/at/gv/egiz/pdfas/impl/signator/IncrementalUpdateHelper.java b/pdf-as-lib/src/main/java/at/gv/egiz/pdfas/impl/signator/IncrementalUpdateHelper.java
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+++ b/pdf-as-lib/src/main/java/at/gv/egiz/pdfas/impl/signator/IncrementalUpdateHelper.java
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+/**
+ * <copyright> Copyright 2006 by Know-Center, Graz, Austria </copyright>
+ * PDF-AS has been contracted by the E-Government Innovation Center EGIZ, a
+ * joint initiative of the Federal Chancellery Austria and Graz University of
+ * Technology.
+ *
+ * Licensed under the EUPL, Version 1.1 or - as soon they will be approved by
+ * the European Commission - subsequent versions of the EUPL (the "Licence");
+ * You may not use this work except in compliance with the Licence.
+ * You may obtain a copy of the Licence at:
+ * http://www.osor.eu/eupl/
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the Licence is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the Licence for the specific language governing permissions and
+ * limitations under the Licence.
+ *
+ * This product combines work with different licenses. See the "NOTICE" text
+ * file for details on the various modules and licenses.
+ * The "NOTICE" text file is part of the distribution. Any derivative works
+ * that you distribute must include a readable copy of the "NOTICE" text file.
+ */
+package at.gv.egiz.pdfas.impl.signator;
+
+import java.util.List;
+
+import at.gv.egiz.pdfas.api.timestamp.TimeStamper;
+import at.gv.egiz.pdfas.framework.input.PdfDataSource;
+import at.gv.egiz.pdfas.framework.output.DataSink;
+import at.gv.egiz.pdfas.framework.signator.SignatorInformation;
+import at.gv.egiz.pdfas.impl.output.ByteArrayDataSink;
+import at.knowcenter.wag.egov.egiz.exceptions.PresentableException;
+import at.knowcenter.wag.egov.egiz.pdf.BinarySignature;
+import at.knowcenter.wag.egov.egiz.pdf.IncrementalUpdateInformation;
+import at.knowcenter.wag.egov.egiz.pdf.PositioningInstruction;
+import at.knowcenter.wag.egov.egiz.sig.SignatureObject;
+
+import com.lowagie.text.pdf.PdfPTable;
+
+/**
+ * @author wprinz
+ */
+public final class IncrementalUpdateHelper
+{
+  public static IncrementalUpdateInformation writeIncrementalUpdate(PdfDataSource pdfDataSource, PdfPTable pdf_table, String profile, PositioningInstruction pi, List variable_field_definitions,
+      List all_field_definitions, TimeStamper timeStamper, SignatorInformation si, SignatureObject so) throws PresentableException
+  {
+    return writeIncrementalUpdate(pdfDataSource, pdf_table, profile, pi, variable_field_definitions, all_field_definitions, null, null, timeStamper, si, so);
+  }
+
+  public static IncrementalUpdateInformation writeIncrementalUpdate(PdfDataSource pdfDataSource, PdfPTable pdf_table, String profile, PositioningInstruction pi, List variable_field_definitions,
+      List all_field_definitions, List invisible_field_definitions, String invisibleKZString, TimeStamper timeStamper, SignatorInformation si, SignatureObject so) throws PresentableException
+  {
+    // PERF: binary sig needs the signed_pdf as byte array
+    ByteArrayDataSink bads = new ByteArrayDataSink();
+    IncrementalUpdateInformation iui = BinarySignature.writeIncrementalUpdate(pdfDataSource, bads, pdf_table, profile, pi, variable_field_definitions, all_field_definitions, invisible_field_definitions, invisibleKZString, timeStamper, si, so);
+    iui.signed_pdf = bads.getByteArray();
+    bads = null;
+
+    return iui;
+  }
+
+  public static IncrementalUpdateInformation writeIncrementalUpdateToDataSink(PdfDataSource pdfDataSource, DataSink dataSink, PdfPTable pdf_table, String profile, PositioningInstruction pi, TimeStamper timeStamper, SignatorInformation si, SignatureObject so) throws PresentableException
+  {
+    return writeIncrementalUpdateToDataSink(pdfDataSource, dataSink, pdf_table, profile, pi, null, null, null, null, timeStamper, si, so);
+  }
+
+  public static IncrementalUpdateInformation writeIncrementalUpdateToDataSink(PdfDataSource pdfDataSource, DataSink dataSink, PdfPTable pdf_table, String profile, PositioningInstruction pi, List variable_field_definitions,
+      List all_field_definitions, List invisible_field_definitions, String invisibleKZString, TimeStamper timeStamper, SignatorInformation si, SignatureObject so) throws PresentableException
+  {
+    return BinarySignature.writeIncrementalUpdate(pdfDataSource, dataSink, pdf_table, profile, pi, variable_field_definitions, all_field_definitions, invisible_field_definitions, invisibleKZString, timeStamper, si, so);
+  }
+}