@property
def sbd_symbol(self):
    ' get the current chains symbol for CBD (e.g. "TBD" on testnet) '
    try:
        symbol = self._get_asset_symbol(0)
    except KeyError:
        symbol = self._get_asset_symbol(1)
    return symbol
get the current chains symbol for CBD (e.g. "TBD" on testnet)
@property
def sbd_symbol(self):
    '  '
    try:
        symbol = self._get_asset_symbol(0)
    except KeyError:
        symbol = self._get_asset_symbol(1)
    return symbol