Method toString

app/src/main/java/eu/faircode/email/Core.java:6020–6027

()

        }

        @NonNull
        @Override
        public String toString() {
            return "[running=" + running +
                    ",recoverable=" + recoverable +
                    ",idle=" + getIdleTime() + "" +
                    ",serial=" + serial + "]";
        }
    }

    static class OperationCanceledExceptionEx extends OperationCanceledException {