Returns the Ajax wp_die() handler if it’s a customized request.

Return

Source

public function wp_die_handler() {
	_deprecated_function( __METHOD__, '4.7.0' );

	if ( $this->doing_ajax() || isset( $_POST['customized'] ) ) {
		return '_ajax_wp_die_handler';
	}

	return '_default_wp_die_handler';
}

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