# File lib/fog/compute/openstack/models/metadata.rb, line 49
        def to_hash(data = nil)
          if data.nil?
            data = {}
            each do |meta|
              if meta.kind_of?(Fog::Compute::OpenStack::Metadatum)
                data.store(meta.key, meta.value)
              else
                data.store(meta["key"], meta["value"])
              end
            end
          end
          data
        end