private void checkErrorsIn(PsiElement context) {
      context.accept(new JavaRecursiveElementWalkingVisitor() {
        private int m_numLocksHeld;

        @Override
        public void visitClass(@NotNull PsiClass aClass) {
          // Do not recurse into
        }

        @Override
        public void visitLambdaExpression(@NotNull PsiLambdaExpression expression) {
          // Ignore
        }

        @Override
        public void visitMethodCallExpression(@NotNull PsiMethodCallExpression expression) {
          super.visitMethodCallExpression(expression);
          if (m_numLocksHeld < 2) {
            return;
          }
          final PsiReferenceExpression methodExpression = expression.getMethodExpression();
          @NonNls final String methodName = methodExpression.getReferenceName();
          if (!HardcodedMethodConstants.WAIT.equals(methodName)) {
            return;
          }
          final PsiMethod method = expression.resolveMethod();
          if (method == null) {
            return;
          }
          final PsiParameterList parameterList = method.getParameterList();
          final int numParams = parameterList.getParametersCount();
          if (numParams > 2) {
            return;
          }
          final PsiParameter[] parameters = parameterList.getParameters();
          if (numParams > 0) {
            final PsiType parameterType = parameters[0].getType();
            if (!parameterType.equals(PsiTypes.longType())) {
              return;
            }
          }
          if (numParams > 1) {
            final PsiType parameterType = parameters[1].getType();
            if (!parameterType.equals(PsiTypes.intType())) {
              return;
            }
          }
          registerMethodCallError(expression);
        }

        @Override
        public void visitMethod(@NotNull PsiMethod method) {
          if (method.hasModifierProperty(PsiModifier.SYNCHRONIZED)) {
            m_numLocksHeld++;
          }
          super.visitMethod(method);
        }

        @Override
        public void visitSynchronizedStatement(
          @NotNull PsiSynchronizedStatement synchronizedStatement) {
          m_numLocksHeld++;
          super.visitSynchronizedStatement(synchronizedStatement);
        }

        @Override
        protected void elementFinished(@NotNull PsiElement element) {
          super.elementFinished(element);
          if (element instanceof PsiMethod && ((PsiMethod)element).hasModifierProperty(PsiModifier.SYNCHRONIZED) ||
              element instanceof PsiSynchronizedStatement) {
            m_numLocksHeld--;
          }
        }
      });
    }
private void checkErrorsIn(PsiElement context)