How to Register the package in the (New) MainActivity

Hi,
This maybe an off topic question,
but I need to register the package into the MainActivity, which looks like this:

```
package com.nameOfthePackage;

import com.facebook.react.ReactActivity;

public class MainActivity extends ReactActivity {

/**
* Returns the name of the main component registered from JavaScript.
* This is used to schedule rendering of the component.
*/
@Override
protected String getMainComponentName() {
return "nameOfthePackage";
}
}
```

I don't know how to do that , I didn't find any solution. Thank you so much for this amazing package !

The issue shows a React Native MainActivity in Java and asks how to register the package, but it names no repository file or test. Start by clarifying the intended registration step and whether the project has existing setup documentation; done would be a resolved usage explanation or a targeted documentation update.

Written by the indexing model from the issue text.