-- | A 'Network.HTTP.Lucu.Resource.Resource' to be run when a HEAD
-- request comes for the resource path. If 'resHead' is Nothing,
-- the system runs 'resGet' instead. If 'resGet' is also Nothing,
-- the system responds \"405 Method Not Allowed\" for HEAD
-- requests.
-- | A 'Network.HTTP.Lucu.Resource.Resource' to be run when a HEAD
-- request comes for the resource path. If 'resHead' is Nothing,
-- the system runs 'resGet' instead. If 'resGet' is also Nothing,
-- the system responds \"405 Method Not Allowed\" for HEAD
-- requests.