public function incr( $args, $assoc_args ) {
		list( $key, $offset, $group ) = $args;
		$value = wp_cache_incr( $key, $offset, $group );

		if ( false === $value ) {
			WP_CLI::error( 'The value was not incremented.' );
		}

		WP_CLI::print_value( $value, $assoc_args );
	}