code: private boolean insertCodeBodyHook(TestMethod method, CtMethod ctMethod,
              String classQualifiedName, String methodSimpleName, String methodArgClassesStr) throws CannotCompileException {
          String hookClassName = HookMethodDef.class.getCanonicalName();
          String initializeSrc = hookInitializeSrc();
          boolean transformed = false;
  
          // iterate code body in the inverse order,
          // so that beforeHook is always inserted after the afterHook of the previous line
          // even if target line of these two hooks are the same
          for (int i = method.getCodeBody().size() - 1; i >= 0; i--) {
              int hookedLine = method.getCodeBody().get(i).getStartLine();
  
              // insert afterHook first and beforeHook second in each iteration,
              // so that beforeHook is always inserted before the afterHook
              // even if actual inserted lines for these two hooks are the same
  
              int afterHookInsertedLine = afterHookInsertLine(method, i);
              if (afterHookInsertedLine != -1) {
                  int actualAfterHookInsertedLine = ctMethod.insertAt(afterHookInsertedLine, false, null);
                  ctMethod.insertAt(afterHookInsertedLine,
                          String.format("%s%s.afterCodeLineHook(\"%s\",\"%s\",\"%s\",\"%s\",%d, %d);",
                                  initializeSrc, hookClassName, classQualifiedName,
                                  methodSimpleName, methodSimpleName,
                                  methodArgClassesStr, hookedLine, actualAfterHookInsertedLine));
                  transformed = true;
              }
  
              int beforeHookInsertedLine = beforeHookInsertLine(method, i);
              if (beforeHookInsertedLine != -1) {
                  int actualBeforeHookInsertedLine = ctMethod.insertAt(beforeHookInsertedLine, false, null);
                  ctMethod.insertAt(beforeHookInsertedLine,
                          String.format("%s%s.beforeCodeLineHook(\"%s\",\"%s\",\"%s\",\"%s\",%d, %d);",
                                  initializeSrc, hookClassName, classQualifiedName,
                                  methodSimpleName, methodSimpleName,
                                  methodArgClassesStr, hookedLine, actualBeforeHookInsertedLine));
                  transformed = true;
              }
          }
  
          return transformed;
      }
docs: - returns true this method actually transform ctMethod body