I need help with an SML Coding Project I am working on for my Discrete Math II class. I$\text{'}$m given an SML function where I need to fill in the if$-$then$-$else statements. Here is the function below:

fun bfsVisit$($g$,$ v$,$ found, bfsEdges, workList$)=$

let val adj $=$ getAdjacent$($g$,$ v$)$;

fun step$($u$,($found$2,$ bfsEdges$2,$ workList$2))=$

if $??$

then $??$

else $??$;

in foldl$($step$)($found$,$ bfsEdges, workList$)($adj$)$

end;

This code also uses the following datatypes and the exception:

datatype vertex $=$ V of int $*$ int list;

datatype graph $=$ G of vertex list;

exception NoSuchVertex;

It also uses these helper functions:

fun getAdjacent$($G$([]),$ v$)=$ raise NoSuchVertex

$|$ getAdjacent$($G$($V$($u$,$ adj$)$::rest$),$ v$)=$

if u $=$ v then adj else getAdjacent$($G$($rest$),$ v$)$;

fun contains$([],$ x$)=$ false

$|$ contains$($y::rest, x$)=$ y $=$ x orelse contains$($rest$,$ x$)$;

As you fill out the if$-$then$-$else statements, please also provide a list of sample outputs I can use for the function so I can get a better understanding of what to do$.$ Thank you.