How to use the @contentful/forma-36-tokens.spacing2Xs function in @contentful/forma-36-tokens

}),
  button: css({
    marginBottom: tokens.spacingS
  }),
  previewButton: css({
    margin: `${tokens.spacingS} 0`,
    display: 'flex',
    alignItems: 'center',
    justifyContent: 'center'
  }),
  previewContent: css({
    display: 'flex',
    alignContent: 'center'
  }),
  previewIcon: css({
    marginRight: tokens.spacing2Xs,
    marginTop: '1px'
  }),
  header: css({
    display: 'flex',
    marginBottom: tokens.spacingS
  }),
  section: css({
    marginBottom: tokens.spacingXl
  }),
  row: css({
    display: 'flex',
    margin: `${tokens.spacingXl} 0`
  }),
  item: css({
    marginRight: tokens.spacingXl
  }),