## 🚀 Feature Proposal

I suggest
1. either to add method `getId()` to interface `WebElement`, or
2. to create interface like `HasId` or `HasIdentity` and make `RemoteWebElement` implement it. 

## Motivation

People often cast `WebElement` to `RemoteWebElement` just to call method `getId()`. 
De-facto all implementations of `WebElement` have method `getId()`. 
For me, it's a problem because `RemoteWebElement` is a class, not interface, and therefore I cannot create a proxy object for it in Selenide. I need some interface with method `getId()`. 

}
    for (CharSequence cs : keysToSend) {
      if (cs == null) {
        throw new IllegalArgumentException("Keys to send should be a not null CharSequence");
      }
    }
    String allKeysToSend = String.join("", keysToSend);
    List<File> files = Arrays.stream(allKeysToSend.split("\n"))
      .map(fileDetector::getLocalFile)
      .collect(Collectors.toList());
    if (!files.isEmpty() && !files.contains(null)) {
      allKeysToSend = files.stream()
        .map(this::upload)
        .collect(Collectors.joining("\n"));
    }
    execute(DriverCommand.SEND_KEYS_TO_ELEMENT(id, new CharSequence[]{allKeysToSend}));
  }
  private String upload(File localFile) {
    if (!localFile.isFile()) {
      throw new WebDriverException("You may only upload files: " + localFile);
    }
    try {
      String zip = Zip.zip(localFile);
      Response response = execute(DriverCommand.UPLOAD_FILE(zip));
      return (String) response.getValue();
    } catch (IOException e) {
      throw new WebDriverException("Cannot upload " + localFile, e);
    }
  }
  @Override