UpdateEnvironmentTemplate (smaws-clients.Smaws_Client

val request : 
  Smaws_Lib.Context.t ->
  update_environment_template_input ->
  (update_environment_template_output,
    [> Smaws_Lib.Protocols.AwsJson.error
    | `AccessDeniedException of access_denied_exception
    | `ConflictException of conflict_exception
    | `InternalServerException of internal_server_exception
    | `ResourceNotFoundException of resource_not_found_exception
    | `ThrottlingException of throttling_exception
    | `ValidationException of validation_exception ])
    Stdlib.result

Update an environment template.