{ allow_dependency_failure : Optional (./properties/allow_dependency_failure/Type ) 
, continue_on_failure : Optional (./properties/continue_on_failure/Type ) 
, depends_on : Optional (./properties/depends_on/Type ) 
, id : Optional (./properties/id/Type ) 
, identifier : Optional (./properties/identifier/Type ) 
, `if` : Optional (./properties/if/Type ) 
, key : Optional (./properties/key/Type ) 
, type : Optional (./properties/type/Type ) 
, wait : Optional (./properties/wait/Type ) 
, waiter : Optional (./properties/waiter/Type ) 
}