How to convert `ContractId X` to `AnyContractId`?

Questions
1

In a DAML Trigger the emitCommands function takes a list of AnyContractIds as second argument to mark them as pending. I have a list of ContractId X that I want to pass in, how can I convert between the two?

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2

To convert to AnyContractId you can use toAnyContractId. For converting from AnyContractId use fromAnyContractId. The latter returns an Optional and will return None if the contract id is of a different template.

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