code: protected void setProbeInProgress(boolean inProgress) {
          if (inProgress && !this.probeInProgress) {
              this.probeInProgress = true;
              if (this.probeMethodAdapter != null) {
                  this.mv = this.visitor;
              }
          } else if (!inProgress && this.probeInProgress) {
              this.probeInProgress = false;
              this.mv = probeMethodAdapter != null ? probeMethodAdapter : this.visitor;
          }
      }
docs: Called by the project injection adapter to indicate that the probe
  instruction stream is being injected. This is used to change the
  target of the chain to skip other probe related adapters.
  
  @param inProgress true if the probe injection is starting, false
  if ended