static boolean openBraceComesFirst(String input) {
        for (int i = 0; i < input.length(); i++) {
            char c = input.charAt(i);
            if (!Character.isWhitespace(c)) {
                return c == '{';
            }
        }
        return false;
    }
Determine if a string is a JSON object literal.
Object literals must begin with an open brace.

@param input         The input string.
@return              True if the string is a JSON literal.
trogdor/src/main/java/org/apache/kafka/trogdor/common/JsonUtil.java