Amqp_client_eio.Connectionmodule Credentials : sig ... endval init :
sw:Eio__core.Switch.t ->
env:< clock : Eio.Time.clock ; net : Eio.Net.t.. > ->
id:string ->
?virtual_host:string ->
?heartbeat:int Stdlib.ref ->
?max_frame_size:int ->
?max_stream_length:int ->
?credentials:Credentials.t ->
?port:int ->
string ->
tval close : t -> string -> unit