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Service layer for PDFsam

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/*
 * This file is part of the PDF Split And Merge source code
 * Created on 20/giu/2014
 * Copyright 2017 by Sober Lemur S.r.l. ([email protected]).
 *
 * 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 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 .
 */
package org.pdfsam.service.pdf;

import org.pdfsam.model.pdf.PdfDocumentDescriptor;
import org.pdfsam.model.tool.RequiredPdfData;

import java.util.function.BiConsumer;

/**
 * A {@link PdfLoader} is responsible for populating a {@link PdfDocumentDescriptor} with some data read from a source.
 *
 * @param  type of the source
 * @author Andrea Vacondio
 */
public interface PdfLoader extends BiConsumer {

    /**
     * @return the {@link RequiredPdfData} associated with this loader.
     */
    RequiredPdfData key();
}