docs: public String assembleProviderUrlString(String[] ldapUrls) {
  		StringBuilder providerUrlBuffer = new StringBuilder(DEFAULT_BUFFER_SIZE);
          for (String ldapUrl : ldapUrls) {
              providerUrlBuffer.append(ldapUrl);
              if (!base.isEmpty()) {
                  if (!ldapUrl.endsWith("/")) {
                      providerUrlBuffer.append("/");
                  }
              }
              providerUrlBuffer.append(formatForUrl(base));
              providerUrlBuffer.append(' ');
          }
  		return providerUrlBuffer.toString().trim();
  	}