WP_Customize_Setting::is_current_blog_previewed()

Source

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

public function is_current_blog_previewed() {
		if ( ! isset( $this->_previewed_blog_id ) ) {
			return false;
		}
		return ( get_current_blog_id() === $this->_previewed_blog_id );
	}