public PlacementStatistics withSpfPercentage(Double spfPercentage) {
        setSpfPercentage(spfPercentage);
        return this;
    }
<p>
The percentage of emails that were authenticated by using Sender Policy Framework (SPF) during the predictive
inbox placement test.
</p>

@param spfPercentage
       The percentage of emails that were authenticated by using Sender Policy Framework (SPF) during the
       predictive inbox placement test.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-pinpointemail/src/main/java/com/amazonaws/services/pinpointemail/model/PlacementStatistics.java