Search for pages matching a search query
Parameters: query - query to search for collection of pages that match query throws: ProviderException - if the search provider failed. throws: IOException - if for some reason the query could not be executed.
Adds a WikiPage for indexing queue. This is called a queue, since
this method is expected to return pretty quickly, and indexing to
be done in a separate thread.
Parameters: page - The WikiPage to be indexed.