code: def dist(self):
      
      underlying_dist = self.underlying_dist
      if self._execution_strategy != NailgunTaskBase.HERMETIC:
        # symlink .pants.d/.jdk -> /some/java/home/
        jdk_home_symlink = os.path.relpath(
          os.path.join(self._zinc_factory.get_options().pants_workdir, '.jdk'),
          get_buildroot())
  
        # Since this code can be run in multi-threading mode due to multiple
        # zinc workers, we need to make sure the file operations below is atomic.
        with self._lock:
          # Create the symlink if it does not exist
          if not os.path.exists(jdk_home_symlink):
            os.symlink(underlying_dist.home, jdk_home_symlink)
          # Recreate if the symlink exists but does not match `underlying_dist.home`.
          elif os.readlink(jdk_home_symlink) != underlying_dist.home:
            os.remove(jdk_home_symlink)
            os.symlink(underlying_dist.home, jdk_home_symlink)
  
        return Distribution(home_path=jdk_home_symlink)
      else:
        return underlying_dist
docs: Return the `Distribution` selected for Zinc based on execution strategy.
  
      :rtype: pants.java.distribution.distribution.Distribution