Module Types.DescribePlacementGroupsRequest
type t={filters : FilterList.t;dry_run : Aws.BaseTypes.Boolean.t option;group_names : PlacementGroupStringList.t;group_ids : PlacementGroupIdStringList.t;}
val make : ?filters:FilterList.t -> ?dry_run:Aws.BaseTypes.Boolean.t -> ?group_names:PlacementGroupStringList.t -> ?group_ids:PlacementGroupIdStringList.t -> unit -> tval parse : Ezxmlm.nodes -> t optionval to_query : t -> Aws.Query.tval to_json : t -> [> `Assoc of (string * Aws.Json.t) list ]val of_json : Aws.Json.t -> t