Workflows mechanics

Chain plugins are base elements that compose a drawing building chain.

Drawers, Adapters and Mappers are examples of chain plugins. They are used by Mangers to build a chain that is used to create a drawing based on a given resource. All chain plugins implement a common method ::prepareBuild() that allows each plugin to modify $build and $resource and transfer it further down the chain to finally get a ready drawing build.

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visualn/visualn.api.php, line 77
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