public void setCountNan(Integer countNan) {
        this.countNan = countNan;
    }
<p>
The number of NAN (not a number) values in the field. If the response value is -1, refer to
<code>CountNanLong</code>.
</p>

@param countNan
       The number of NAN (not a number) values in the field. If the response value is -1, refer to
       <code>CountNanLong</code>.
aws-java-sdk-forecast/src/main/java/com/amazonaws/services/forecast/model/Statistics.java