default byte getOrder() {
        return 0;
    }
Gets the sort order of the plugin from -128 to 127.

<p>Plugins are applied according to this sort order. Lower values
are executed before higher values (for example, -128 comes before 0,
comes before 127). Plugins default to 0, which is the middle point
between the minimum and maximum order values.

@return Returns the sort order, defaulting to 0.
smithy-openapi/src/main/java/software/amazon/smithy/openapi/fromsmithy/OpenApiMapper.java