docs: public void copyTex4htOutputToOutputFolder( File texFile, File tempDirectory, File tex4htOutputDirectory,
                                                  File outputDirectory )
          throws MojoExecutionException, MojoFailureException
      {
          File[] outputFiles = tex4htOutputDirectory.listFiles();
  
          if ( outputFiles == null || outputFiles.length == 0 )
          {
              log.warn( "LaTeX file " + texFile + " did not generate any output in " + tex4htOutputDirectory + "!" );
          }
          else
          {
              File targetDirectory = getTargetDirectory( texFile, tempDirectory, outputDirectory );
              copyFilesToDirectory( outputFiles, targetDirectory );
          }
      }