== bucket: capacity 5, refill 5 tokens per 10 s
-- burst: five calls in the same instant
call 1: consumed=true remaining=4 waitForRefill=0s
call 2: consumed=true remaining=3 waitForRefill=0s
call 3: consumed=true remaining=2 waitForRefill=0s
call 4: consumed=true remaining=1 waitForRefill=0s
call 5: consumed=true remaining=0 waitForRefill=0s
call 6: consumed=false remaining=0 waitForRefill=2s
-- greedy refill: tokens trickle back at 1 per 2 s
after 1 s: available=0
after 2 s: available=1
after 4 s: available=2
after 8 s: available=4
-- intervally refill: nothing, then everything
after 9.999 s: available=0
after 10.000 s: available=5