docs: def CopyFiles(self):
      """This sets up the template directory."""
      if self.fleetspeak_enabled:
        # Copy files needed for dpkg-buildpackage.
        shutil.copytree(
            config_lib.Resource().Filter(
                "install_data/debian/dpkg_client/fleetspeak-debian"),
            os.path.join(self.package_dir, "debian/debian.in"))
        return
  
      # Copy the nanny binary.
      shutil.copy(
          package.ResourcePath("grr-response-core",
                               "install_data/debian/dpkg_client/nanny.sh.in"),
          self.output_dir)
  
      # Copy files needed for dpkg-buildpackage.
      shutil.copytree(
          config_lib.Resource().Filter("install_data/debian/dpkg_client/debian"),
          os.path.join(self.package_dir, "debian/debian.in"))
  
      # Copy upstart files
      outdir = os.path.join(self.package_dir, "debian/upstart.in")
      utils.EnsureDirExists(outdir)
      shutil.copy(
          config_lib.Resource().Filter(
              "install_data/debian/dpkg_client/upstart/grr-client.conf"), outdir)
  
      # Copy init files
      outdir = os.path.join(self.package_dir, "debian/initd.in")
      utils.EnsureDirExists(outdir)
      shutil.copy(
          config_lib.Resource().Filter(
              "install_data/debian/dpkg_client/initd/grr-client"), outdir)
  
      # Copy systemd unit file
      outdir = os.path.join(self.package_dir, "debian/systemd.in")
      utils.EnsureDirExists(outdir)
      shutil.copy(
          config_lib.Resource().Filter(
              "install_data/systemd/client/grr-client.service"), outdir)