code: public void accumulateBug(BugInstance bug, BytecodeScanningDetector visitor) {
          SourceLineAnnotation source = SourceLineAnnotation.fromVisitedInstruction(visitor);
          accumulateBug(bug, source);
      }
docs: Accumulate a warning at source location currently being visited by given
  BytecodeScanningDetector.
  
  @param bug
  the warning
  @param visitor
  the BytecodeScanningDetector