protected boolean isNextAdjacent() {
		if (!hasNext()) {
			return false;
		}

		Token last = tokenStream.get(position - 1);
		Token next = tokenStream.get(position);
		return next.startpos == last.endpos;
	}
Return {@code true} if the first character of the token at the current position
is the same as the last character of the token at the previous position.

@return true if the first character of the current token matches the last
character of the previous token
spring-xd-dirt/src/main/java/org/springframework/xd/dirt/job/dsl/Tokens.java