public function get_columns( $context = 'display' ) {

		$cols = apply_filters( 'llms_table_get_' . $this->id . '_columns', $this->set_columns(), $context );

		if ( $this->is_exportable ) {

			foreach ( $cols as $id => $data ) {

				if ( ! $this->is_col_visible( $data, $context ) ) {
					unset( $cols[ $id ] );
				}
			}
		}

		return $cols;

	}