struct StackTraceRequest

The request returns a stacktrace from the current execution state of a given

thread. A client can request all stack frames by omitting the startFrame and

levels arguments. For performance-conscious clients and if the corresponding

capability `supportsDelayedStackTraceLoading` is true, stack frames can be

retrieved in a piecemeal way with the `startFrame` and `levels` arguments.

The response of the `stackTrace` request may contain a `totalFrames` property

that hints at the total number of frames in the stack. If a client needs this

total number upfront, it can issue a request for a single (first) frame and

depending on the value of `totalFrames` decide how to proceed. In any case a

client should be prepared to receive fewer frames than requested, which is an

indication that the end of the stack has been reached.