public PricingPlan withEffectiveDateTime(java.util.Date effectiveDateTime) {
        setEffectiveDateTime(effectiveDateTime);
        return this;
    }
<p>
The effective date and time of the pricing plan.
</p>

@param effectiveDateTime
       The effective date and time of the pricing plan.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-iottwinmaker/src/main/java/com/amazonaws/services/iottwinmaker/model/PricingPlan.java