src/main/java/com/microsoft/aad/oidcpoc/AuthFlow.java [195:205]:
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            result = future.get();
        } catch (ExecutionException e) {
            throw e.getCause();
        } finally {
            service.shutdown();
        }

        if (result == null) {
            throw new ServiceUnavailableException("authentication result was null");
        }
        return result;
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src/main/java/com/microsoft/aad/oidcpoc/AuthFlow.java [224:234]:
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            result = future.get();
        } catch (ExecutionException e) {
            throw e.getCause();
        } finally {
            service.shutdown();
        }

        if (result == null) {
            throw new ServiceUnavailableException("authentication result was null");
        }
        return result;
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