Add an additional method #clear(Site) to the SearchIndex which allows to clear
only one index. Change the method ContentRepositoryIndex#clear() to use the new
method which ensures that clearing the content repository index does not remove
the indices of all other sites.
Add an additional method #clear(Site) to the SearchIndex which allows to clear only one index. Change the method ContentRepositoryIndex#clear() to use the new method which ensures that clearing the content repository index does not remove the indices of all other sites.