Initial value for an input-sourced entry — what a caller supplies at startInstance (or setStage). Same discriminator shape as ResolvedFieldEntry minus _key and with null values disallowed (omission signals "no initial value").
input
startInstance
setStage
_key
Initial value for an
input-sourced entry — what a caller supplies atstartInstance(orsetStage). Same discriminator shape as ResolvedFieldEntry minus_keyand with null values disallowed (omission signals "no initial value").