dynamo: add Close method
dynamo: add Close method

adamstruck/funnel,adamstruck/funnel,ohsu-comp-bio/funnel,buchanae/funnel,ohsu-comp-bio/funnel,adamstruck/funnel,buchanae/funnel,buchanae/funnel,adamstruck/funnel,ohsu-comp-bio/funnel,buchanae/funnel,ohsu-comp-bio/funnel