API docs: express.middlewarebindingoptions.downstreamgroups

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MiddlewareBindingOptions.downstreamGroups property

An array of group names for downstream middleware in the cascading order.

For example, the sendResponse depends on invokeMethod for response processing. The downstreamGroups for sendResponse should be ['invokeMethod']. The order of groups in the array does not matter.

Signature:

downstreamGroups?: string | string[];