code: public void execute() throws MojoExecutionException, MojoFailureException {
          if(preverifyPath == null) {
              getLog().debug("skip native preverification");
              return;
          }
          
          getLog().debug("start native preverification");
  
          final File preverifyCmd= getAbsolutePreverifyCommand();
          
          StreamConsumer stdoutLogger= new LogWriter(false);
          StreamConsumer stderrLogger= new LogWriter(true);
          
          String classPath = getClassPath(getProject());
          AbstractConfiguration[] configurations= (AbstractConfiguration[]) getPluginContext().get(ConfiguratorMojo.GENERATED_CONFIGURATIONS_KEY);
          
          for(AbstractConfiguration configuration : configurations) {
              if(!(configuration instanceof NodeConfiguration)) {
                  continue;
              }
              
              String classifier= configuration.className.substring(configuration.className.lastIndexOf('.') + 1);
              File oldJar= checkJarFile(classifier);
              
              if(keepJars) {
                  try {
                      FileUtils.copyFile(oldJar, getJarFile(classifier + "-before_preverify"));
                  } catch (IOException ioe) {
                      getLog().warn("could not keep old jar '" + oldJar.getAbsolutePath() + "'", ioe);
                  }
              }
              
              getLog().info("Preverifying jar: " + FileNameUtil.getAbsolutPath(oldJar));
              
              Commandline commandLine= new Commandline(preverifyCmd.getPath() + " -classpath " + classPath + " -d " + FileNameUtil.getAbsolutPath(oldJar.getParentFile()) + " " + FileNameUtil.getAbsolutPath(oldJar));
              getLog().debug(commandLine.toString());
              
              try {
                  if(CommandLineUtils.executeCommandLine(commandLine, stdoutLogger, stderrLogger) != 0) {
                      throw new MojoExecutionException("Preverification failed. Please read the log for details.");
                  }
              } catch (CommandLineException cle) {
                  throw new MojoExecutionException("could not execute preverify command", cle);
              }
          }
  
          getLog().debug("finished preverification");
      }
docs: The main method of this MoJo