private String data(Iterable<Token> many) {
		StringBuilder result = new StringBuilder();
		for (Token t : many) {
			if (t.getKind().hasPayload()) {
				result.append(t.data);
			}
			else {
				result.append(t.getKind().tokenChars);
			}
		}
		return result.toString();
	}
Return the concatenation of the data of many tokens.
spring-xd-dirt/src/main/java/org/springframework/xd/dirt/stream/dsl/StreamConfigParser.java