code: private Set<ConfigurationItem> toConfigurationItems(Map<String, String> configurationItemMap) {
          ImmutableSet.Builder<ConfigurationItem> configurationItemsBuilder = ImmutableSet.builder();
  
          for (Map.Entry<String, String> item : configurationItemMap.entrySet()) {
              configurationItemsBuilder.add(new ConfigurationItem(item.getKey(), item.getValue()));
          }
  
          return configurationItemsBuilder.build();
      }
docs: Converts a {@code Map} of {@code String}s and {@code String}s to a {@code Set} of {@code ConfigurationItem}s.
  
  @param configurationItemMap a {@code Map} of {@code String}s and {@code String}s
  @return a {@code Set} of {@code ConfigurationItem}s.