code: protected void copyManifest() throws MojoExecutionException
      {
          getLog().debug( "copyManifest: " + androidManifestFile + " -> " + destinationManifestFile );
          if ( androidManifestFile == null )
          {
              getLog().debug( "Manifest copying disabled. Using default manifest only" );
              return;
          }
  
          try
          {
              DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
              DocumentBuilder db = dbf.newDocumentBuilder();
              Document doc = db.parse( androidManifestFile );
              Source source = new DOMSource( doc );
  
              TransformerFactory xfactory = TransformerFactory.newInstance();
              Transformer xformer = xfactory.newTransformer();
              xformer.setOutputProperty( OutputKeys.OMIT_XML_DECLARATION, "yes" );
  
              FileWriter writer = null;
              try
              {
                  destinationManifestFile.getParentFile().mkdirs();
  
                  writer = new FileWriter( destinationManifestFile, false );
                  if ( doc.getXmlEncoding() != null && doc.getXmlVersion() != null )
                  {
                      String xmldecl = String.format( "<?xml version=\"%s\" encoding=\"%s\"?>%n",
                              doc.getXmlVersion(), doc.getXmlEncoding() );
  
                      writer.write( xmldecl );
                  }
                  Result result = new StreamResult( writer );
                  xformer.transform( source, result );
                  getLog().info( "Manifest copied from " + androidManifestFile + " to " + destinationManifestFile );
              }
              finally
              {
                  IOUtils.closeQuietly( writer );
              }
          }
          catch ( Exception e )
          {
              getLog().error( "Error during copyManifest" );
              throw new MojoExecutionException( "Error during copyManifest", e );
          }
      }
docs: Copy the AndroidManifest.xml from androidManifestFile to destinationManifestFile
  
  @throws MojoExecutionException