# File lib/fog/rackspace/requests/compute_v2/update_metadata.rb, line 5
        def update_metadata(collection, obj_id, metadata = {})
          request(
            :expects => [200, 203],
            :method => 'POST',
            :path => "/#{collection}/#{obj_id}/metadata",
            :body => Fog::JSON.encode('metadata' => metadata)            
          )
        end