class Aws::Stubbing::EmptyStub

def stub_structure(ref, visited)
  ref.shape.members.inject(ref.shape.struct_class.new) do |struct, (mname, mref)|
    # For eventstream shape, it returns an Enumerator
    unless mref.eventstream
      struct[mname] = stub_ref(mref, visited)
    end
    struct
  end
end