use ;
/// An external environment state imported (declared in host, injected into
/// guest) fn can access. This'll allow host to read from updated state from
/// guest.
///
/// This is `base` environment exposes guest's memory space only. For other
/// calls requires additional data to be set in the host, separate
/// hostenvironments are declared. Refer `CommentsHostEnvironment` for an
/// example.
///
/// ref: https://docs.wasmer.io/integrations/examples/host-functions#declaring-the-data