code: protected ClassConfigData processClassConfiguration(final InputStream inputStream) throws IOException {
          if (introspectAnnotations == false) {
              return new ClassConfigData(inputStream);
          }
  
          ClassReader cr = new ClassReader(inputStream);
          ClassWriter cw = new ClassWriter(cr, 0); // Don't compute anything - read only mode
          TraceConfigClassVisitor cv = new TraceConfigClassVisitor(cw);
          cr.accept(cv, 0);
          ClassInfo classInfo = cv.getClassInfo();
          InputStream classInputStream = new ByteArrayInputStream(cw.toByteArray());
  
          return new ClassConfigData(classInputStream, classInfo);
      }
docs: Introspect configuration information from the class in the provided
  InputStream.