protected function add_leads_metabox() {
		add_meta_box(
			MortgagePlatform::$prefix . 'callrail_lead',
			__( 'Leads', 'CalculatorsCallRailAddon' ),
			array( $this, 'callrail_lead_callback' ),
			self::$callrail,
			'side',
			'core'
		);
	}