asUserOrNull
Casts this PolicyGrantPrincipal as a User and retrieves its aws.sdk.kotlin.services.datazone.model.UserPolicyGrantPrincipal value. Returns null if the PolicyGrantPrincipal is not a User.
Casts this PolicyGrantPrincipal as a User and retrieves its aws.sdk.kotlin.services.datazone.model.UserPolicyGrantPrincipal value. Returns null if the PolicyGrantPrincipal is not a User.