projects/ui/mat-stepper/material-bridge/handle.ts
import { CngxMatStepHandleSetup } from '@cngx/ui/mat-stepper'
Wiring bundle returned from createMatStepHandle. The instrumentation directive holds the bundle in a Map<MatStep, Setup> for diff-only registry churn; only handle is exposed to the presenter.
Map<MatStep, Setup>
handle
CngxStepRegistration