code: private boolean isRemovedDefaultSessionToken(String site, String token) {
  		if (removedDefaultTokens == null)
  			return false;
  		HashSet<String> removed = removedDefaultTokens.get(site);
  		if (removed == null || !removed.contains(token))
  			return false;
  		return true;
  	}
docs: Checks if a particular default session token was removed by an user as a session token for a
  site.
  
  @param site the site. This parameter has to be formed as defined in the
  {@link ExtensionHttpSessions} class documentation.
  @param token the token
  @return true, if it is a previously removed default session token