in binding-lua/gym_http_client.lua [107:116]
function GymClient:env_monitor_start(instance_id, directory, force, resume, video_callable)
if not force then force = false end
if not resume then resume = false end
req_data = {directory = directory,
force = tostring(force),
resume = tostring(resume),
video_callable = video_callable}
route = '/v1/envs/'..instance_id..'/monitor/start/'
resp_data = self:post_request(route, req_data)
end