# Transformer Structure

To create a custom ActivityPub Transformer start by creating a class that extends the `\Activitypub\Transformer\Base` class and fill in all the required methods.

Each transformer needs to have a few basic settings — a unique name that will identify the transformer, a label that will be used as the title when being displayed in the settings section, and a list of supported post types that the transformer can use as an input.

## Transformer Class

First, we need to create a class that extends the `\Activitypub\Transformer\Base` class:

```php
class Acivitypub_Test_Transformer extends \Activitypub\Transformer\Base {
}
```

## Transformer Methods

A simple transformer skeleton class will look as follows:

```php
class Acivitypub_Test_Transformer extends \Activitypub\Transformer\Base {
	public function get_name() {}

	public function get_label() {}

	public function get_object_type() {}

	public function supported_post_types() {}

	public function to_object() {}

	// TODO
}
```

The `\Activitypub\Transformer\Base` class has many more methods, but the vast majority of your needs are covered by the methods mentioned above.

// TODO