Hi. I am not sure I understand your question, but if you are looking for the implementation of one of the methods contained in Sundials you have to look at the library it self (source here: http://computation.llnl.gov/casc/sundials/main.html), since he Julia package "only" provides a wrapper for that library. AFAIK there is no Julia implementation of the Adams method (but it would certainly be very welcome for ODE.jl).
Hope that helps, Alex.
