public final void skipWhitespace() {
            for (;;) {
                if (ch <= ' ' && (ch == ' ' || ch == '\r' || ch == '\n' || ch == '\t' || ch == '\f' || ch == '\b')) {
                    next();
                    continue;
                } else {
                    break;
                }
            }
        }
@since 1.2.51
@param json
@param path
@return
src/main/java/com/alibaba/fastjson/JSONPath.java