module Aws::ClientStubs

def convert_stub(operation_name, stub)
  stub = case stub
  when Proc then stub
  when Exception, Class then { error: stub }
  when String then service_error_stub(stub)
  when Hash then http_response_stub(operation_name, stub)
  else { data: stub }
  end
  if Hash === stub
    stub[:mutex] = Mutex.new
  end
  stub
end