pub fn require_struct(
params: &HashMap<String, String>,
prefix: &str,
) -> Result<(), AwsServiceError>Expand description
Require a structure member to be present, identified by any wire param
under {prefix}. (e.g. InstanceTagAttribute.IncludeAllTagsOfInstance).
Omitting a required structure is wire-observable, so the harness emits a
negative_omit_<Struct> variant — handlers must reject it.