Plugin system bug

[URVL]

Impress and Node.js versions

current

Platform

No response

Describe the bug

There is this example of using the plugin: https://github.com/metarhia/Example/blob/master/application/api/geo.1.js

In the plugin source code we see that the plugin returns a function that returns a function. https://github.com/metarhia/metasql/blob/master/lib/plugins/crud.js

However, in the plugin loader, only the first function is called.

impress/lib/api.js

Line 89 in 9208292

const plugin = exports(unit);

this does not allow to load the plugin normally and add the necessary endpoints to the API namespace.
And also the endpoints that should be generated by the plugin in this implementation are not given through api/system/introspect

To Reproduce

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Expected behavior

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Screenshots

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Additional context

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