code: public static List<StubConfiguration> fromString(Collection<String> collection,
  			String defaultClassifier) {
  		List<StubConfiguration> stubs = new ArrayList<>();
  		for (String config : collection) {
  			if (StringUtils.hasText(config)) {
  				stubs.add(StubSpecification.parse(config, defaultClassifier).stub);
  			}
  		}
  		return stubs;
  	}
docs: The string is expected to be a map with entry called "stubs" that contains a list
  of Strings in the format
  
  <ul>
  <li>groupid:artifactid:version:classifier:port</li>
  <li>groupid:artifactid:version:classifier</li>
  <li>groupid:artifactid:version</li>
  <li>groupid:artifactid</li>
  </ul>
  
  In the latter case the provided default stub classifier will be passed.
  
  Example:
  
  "a:b,c:d:e"
  @param collection collection of ids
  @param defaultClassifier default classifier to append if one is missing
  @return parsed stub configurations