bi = (BuiltIn) ((ICIChainMember) bi).getPreviousICIChainMember();
bi = (BuiltIn) ((ICIChainMember) bi).getPreviousICIChainMember();
bi = (BuiltIn) ((ICIChainMember) bi).getPreviousICIChainMember();
bi = (BuiltIn) ((ICIChainMember) bi).getPreviousICIChainMember();
bi = (BuiltIn) ((ICIChainMember) bi).getPreviousICIChainMember();
bi = (BuiltIn) ((ICIChainMember) bi).getPreviousICIChainMember();