private static String deEscape(final String input) {
        return input.replace(ESCAPED_QUOTE_STR, QUOTE_STR);
    }
Split the input on spaces with each chunk optionally enclosed with a double quotes.
Should ignore leading, trailing repeated spaces.

@return An empty list if it can't parse
stroom-core-shared/src/main/java/stroom/security/shared/QuickFilterExpressionParser.java