'Add a cache buster to a set of files on disk.
The ``path`` should be the path on disk where the static files
reside.  This can be an absolute path, a package-relative path, or a
:term:`asset specification`.
The ``cachebust`` argument may be set to cause
:meth:`~pyramid.request.Request.static_url` to use cache busting when
generating URLs. See :ref:`cache_busting` for general information
about cache busting. The value of the ``cachebust`` argument must
be an object which implements
:class:`~pyramid.interfaces.ICacheBuster`.
If ``explicit`` is set to ``True`` then the ``path`` for the cache
buster will be matched based on the ``rawspec`` instead of the
``pathspec`` as defined in the
:class:`~pyramid.interfaces.ICacheBuster` interface.
Default: ``False``.'

def add_cache_buster(self, path, cachebust, explicit=False):

    spec = self._make_spec(path)
    info = self._get_static_info()
    info.add_cache_buster(self, spec, cachebust, explicit=explicit)
