code: public UrlBuilder addPath(String path) {
  		if (path.charAt(0) == '/' && baseUrl.endsWith("/")) {
  			baseUrl = baseUrl + path.substring(1);
  		} else {
  			baseUrl = baseUrl + path;
  		}
  		return this;
  	}
docs: Add a path extension.
  
  @param path
  path
  @return this to allow concatenation