Stone.js API
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    StonePluginBlueprintMiddleware: MetaPipe<
        BlueprintContext<IBlueprint, ClassType>,
        IBlueprint,
    >

    A blueprint-phase middleware contributed by a plugin.

    It runs inside the CLI's own blueprint pipeline (before any command), on the same BlueprintContext as the CLI, so a plugin can read and augment stone.builder.* configuration before the builders run.