final Iterator iterator = jsonObject.keys();
while (iterator.hasNext()) {
final Object o = iterator.next();
if (!(o instanceof String)) {
throw new JSONException(
"Cannot parse URIs: key is expected to be valid String. Got " + (o == null ? "null" : o.getClass())
+ " instead.");
}
final String key = (String) o;
uris.put(key, JsonParseUtil.parseURI(jsonObject.getString(key)));