code: function convertTransferRate(transferRate: number | string): number | string {
    return (new BigNumber(transferRate)).shift(9).toNumber()
  }
docs: Note: A fee of 1% requires 101% of the destination to be sent for the
  destination to receive 100%.
  The transfer rate is specified as the input amount as fraction of 1.
  To specify the default rate of 0%, a 100% input amount, specify 1.
  To specify a rate of 1%, a 101% input amount, specify 1.01
  
  @param {Number|String} transferRate
  
  @returns {Number|String} numbers will be converted while strings
  are returned