What does this function do and how to add a condition?

Question

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add_action( 'transition_post_status', function ( $new_status, $old_status, $post ) {
      if ( "post" == $post->post_type && 'publish' === $new_status ) {
        delete_transient( self::$cache_filed );
      }
    }, 10, 3 );

As I understand it, she watches post status change events and is already clearing the cache.
A question of such a plan, and if I have an event post type, is
it correct to write

add_action( 'transition_post_status', function ( $new_status, $old_status, $post ) {
      if ( "post" == $post->post_type && 'publish' === $new_status || "event" == $post->post_type && 'publish' === $new_status ) {
        delete_transient( self::$cache_filed );
      }
    }, 10, 3 );

Answer 1

You have interesting basics) You can shorten it a little by checking the current post_type in an array

add_action( 'transition_post_status', function ( $new_status, $old_status, $post ) {
  if ( in_array( $post->post_type, ['post', 'event'] ) && 'publish' === $new_status ) {
    delete_transient( self::$cache_filed );
  }
}, 10, 3 );