DescribeVolumes (smaws-clients.Smaws_Client

val error_to_string : 
  [ Smaws_Lib.Protocols.AwsJson.error
  | `BadRequest of Types.bad_request
  | `InternalServerError of Types.internal_server_error
  | `VolumeNotFound of Types.volume_not_found ] ->
  string

val request : 
  'http_type Smaws_Lib.Context.t ->
  Types.describe_volumes_request ->
  (Types.describe_volumes_response,
    [> Smaws_Lib.Protocols.AwsJson.error
    | `BadRequest of Types.bad_request
    | `InternalServerError of Types.internal_server_error
    | `VolumeNotFound of Types.volume_not_found ])
    Stdlib.result

val request_with_metadata : 
  'http_type Smaws_Lib.Context.t ->
  Types.describe_volumes_request ->
  (Types.describe_volumes_response Smaws_Lib.Response.t,
    [> Smaws_Lib.Protocols.AwsJson.error
    | `BadRequest of Types.bad_request
    | `InternalServerError of Types.internal_server_error
    | `VolumeNotFound of Types.volume_not_found ]
    * Smaws_Lib.Response.metadata)
    Stdlib.result