Prototype: a function and a calling convention Get arguments and return values at given points in the trace.
| Class | ResolvedArgumentValue | 
    Value and information of a function argument | 
| Class | ResolvedRetValue | 
    Value and information of a function result. | 
| Class | Prototype | 
    Information about a function prototype and its calling convention. Can be used to read arguments and return value at given points in the trace. | 
| Class | CallSiteValues | 
    Helper class to access arguments and return value from a `call` transition. |