tryChild

Callable

• tryChild(reference: undefined | null | EntityReference, type: string, id: string): EntityReference | undefined

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• child, returning undefined where it throws. Also undefined for an undefined or null reference, so it chains onto another try* form without a check in between. Takes no version: build a reference with a version qualifier through child.

  Any refused input yields undefined, including one of the wrong type from an untyped caller.

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  Parameters

  • reference: undefined | null | EntityReference

  • type: string

  • id: string

  Returns EntityReference | undefined