WP_REST_Posts_Controller::get_item( WP_REST_Request $request ): WP_REST_Response|WP_Error

Source

public function get_item( $request ) {
	$post = $this->get_post( $request['id'] );
	if ( is_wp_error( $post ) ) {
		return $post;
	}

	$data     = $this->prepare_item_for_response( $post, $request );
	$response = rest_ensure_response( $data );

	if ( is_post_type_viewable( get_post_type_object( $post->post_type ) ) ) {
		$response->link_header( 'alternate', get_permalink( $post->ID ), array( 'type' => 'text/html' ) );
	}

	return $response;
}

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