code: private void unmarkRemovedDefaultSessionToken(String site, String token) {
  		if (removedDefaultTokens == null)
  			return;
  		HashSet<String> removed = removedDefaultTokens.get(site);
  		if (removed == null)
  			return;
  		removed.remove(token);
  	}
docs: Unmarks a default session token as removed for a particular site.
  
  @param site the site. This parameter has to be formed as defined in the
  {@link ExtensionHttpSessions} class documentation.
  @param token the token