WP_Customize_Manager::get_preview_url()

Source

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

public function get_preview_url() {
		if ( empty( $this->preview_url ) ) {
			$preview_url = home_url( '/' );
		} else {
			$preview_url = $this->preview_url;
		}
		return $preview_url;
	}