protected boolean maybeEat(TokenKind desiredKind) {
		if (peek(desiredKind)) {
			next();
			return true;
		}
		else {
			return false;
		}
	}
Consume the next token if it matches the desired token kind and return true; otherwise
return false.

@param desiredKind the desired token to eat
@return true if the token was consumed, otherwise false
spring-xd-dirt/src/main/java/org/springframework/xd/dirt/job/dsl/Tokens.java