スライドを1つのプレゼンテーションから別のJavaを使用してコピー

<repositories>
    <repository>
        <id>com.e-iceblue</id>
        <name>e-iceblue</name>
        <url>http://repo.e-iceblue.com/nexus/content/groups/public/</url>
    </repository>
</repositories>
<dependencies>
    <dependency>
        <groupId>e-iceblue</groupId>
        <artifactId>spire.presentation.free</artifactId>
        <version>3.9.0</version>
    </dependency>
</dependencies>

import com.spire.presentation.FileFormat;
import com.spire.presentation.Presentation;

public class CopySlides {
    public static void main(String[] args) throws Exception {

        //Create a Presentation object to load the first document
        Presentation pptOne= new Presentation();
        pptOne.loadFromFile("test1.pptx");

        //Create a Presentation object to load the second document
        Presentation pptTwo = new Presentation();
        pptTwo.loadFromFile("input1.pptx");

        //Insert the specific slide of the first document to the specified position on the second document
        pptTwo.getSlides().insert(1,pptOne.getSlides().get(0));

        //Append the specific slide of the first document to the end of the second document
        pptTwo.getSlides().append(pptOne.getSlides().get(2));

        //Save the second document to file
        pptTwo.saveToFile("CopySlides.pptx", FileFormat.PPTX_2013);
    }
}