WP_Customize_Manager::customize_preview_signature()
This method has been deprecated.
Prints a signature so we can ensure the Customizer was properly executed.
Source
File: wp-includes/class-wp-customize-manager.php
public function customize_preview_signature() {
		_deprecated_function( __METHOD__, '4.7.0' );
	}  Changelog
| Version | Description | 
|---|---|
| 4.7.0 | This method has been deprecated. | 
| 3.4.0 | Introduced. | 
    © 2003–2021 WordPress Foundation
Licensed under the GNU GPLv2+ License.
    https://developer.wordpress.org/reference/classes/wp_customize_manager/customize_preview_signature