public void setDiffType(String diffType) {
        this.diffType = diffType;
    }
<p>
Difference type between actual and expected recovery point objective (RPO) and recovery time objective (RTO)
values. Currently, Resilience Hub supports only <b>NotEqual</b> difference type.
</p>

@param diffType
       Difference type between actual and expected recovery point objective (RPO) and recovery time objective
       (RTO) values. Currently, Resilience Hub supports only <b>NotEqual</b> difference type.
@see DifferenceType
aws-java-sdk-resiliencehub/src/main/java/com/amazonaws/services/resiliencehub/model/ComplianceDrift.java