static Set<Token> getUniqueTokens(final List<Locator> locators) {

        return Token.getUniqueTokens(locators.stream())
                    .filter(token -> !TokenCache.getInstance().isTokenCurrent(token))
                    .collect(toSet());
    }
static Set < Token > getUniqueTokens ( final List < Locator > locators ) { return Token . getUniqueTokens ( locators . stream ( ) ) . filter ( token -> ! TokenCache . getInstance ( ) . isTokenCurrent ( token ) ) . collect ( toSet ( ) ) ; }
For all of these {@link Locator}'s, get a unique list of {@link Token}'s which are not in token cache

@param locators
@return