'type, dimension(:[,:]...) :: a'
                    'integer len'
     _Interface_:   'subroutine acc_update_device_async(a, async)'
                    'type, dimension(:[,:]...) :: a'
                    'integer(acc_handle_kind) :: async'
     _Interface_:   'subroutine acc_update_device_async(a, len, async)'
                    'type, dimension(:[,:]...) :: a'
                    'integer len'
                    'integer(acc_handle_kind) :: async'

_Reference_:
     OpenACC specification v2.6 (https://www.openacc.org), section
     3.2.24.