in scripts/lua/lib/redis.lua [688:697]
function _M.deleteSwagger(red, id)
local existing = _M.getSwagger(red, id)
if existing == nil then
request.err(404, 'Swagger doesn\'t exist')
end
local ok, err = hdel(red, "swagger", id)
if not ok then
request.err(500, utils.concatStrings({"Failed to delete swagger: ", err}))
end
end