Source

File: wp-includes/class-wp-customize-manager.php

public function trash_changeset_post( $post ) {
		global $wpdb;

		$post = get_post( $post );

		if ( ! ( $post instanceof WP_Post ) ) {
			return $post;
		}
		$post_id = $post->ID;

		if ( ! EMPTY_TRASH_DAYS ) {
			return wp_delete_post( $post_id, true );
		}

		if ( 'trash' === get_post_status( $post ) ) {
			return false;
		}

		/** This filter is documented in wp-includes/post.php */
		$check = apply_filters( 'pre_trash_post', null, $post );
		if ( null !== $check ) {
			return $check;
		}

		/** This action is documented in wp-includes/post.php */
		do_action( 'wp_trash_post', $post_id );

		add_post_meta( $post_id, '_wp_trash_meta_status', $post->post_status );
		add_post_meta( $post_id, '_wp_trash_meta_time', time() );

		$old_status = $post->post_status;
		$new_status = 'trash';
		$wpdb->update( $wpdb->posts, array( 'post_status' => $new_status ), array( 'ID' => $post->ID ) );
		clean_post_cache( $post->ID );

		$post->post_status = $new_status;
		wp_transition_post_status( $new_status, $old_status, $post );

		/** This action is documented in wp-includes/post.php */
		do_action( "edit_post_{$post->post_type}", $post->ID, $post );

		/** This action is documented in wp-includes/post.php */
		do_action( 'edit_post', $post->ID, $post );

		/** This action is documented in wp-includes/post.php */
		do_action( "save_post_{$post->post_type}", $post->ID, $post, true );

		/** This action is documented in wp-includes/post.php */
		do_action( 'save_post', $post->ID, $post, true );

		/** This action is documented in wp-includes/post.php */
		do_action( 'wp_insert_post', $post->ID, $post, true );

		wp_trash_post_comments( $post_id );

		/** This action is documented in wp-includes/post.php */
		do_action( 'trashed_post', $post_id );

		return $post;
	}