docs: def BuildTemplates(self):
      """Builds the client templates.
  
      We dont need to run special compilers so just enter the virtualenv and
      build. Python will already find its own MSVC for python compilers.
      """
      if args.config:
        build_args = [
            "--verbose", "--config", args.config, "build", "--output",
            args.output_dir
        ]
      else:
        build_args = ["--verbose", "build", "--output", args.output_dir]
      subprocess.check_call([self.grr_client_build64] + build_args)
      if args.build_32:
        subprocess.check_call([self.grr_client_build32] + build_args)