public UpdateUsageResult withStartDate(String startDate) {
        setStartDate(startDate);
        return this;
    }
<p>
The starting date of the usage data.
</p>

@param startDate
       The starting date of the usage data.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-api-gateway/src/main/java/com/amazonaws/services/apigateway/model/UpdateUsageResult.java