public PredictorExecution withTestWindows(java.util.Collection<TestWindowSummary> testWindows) {
        setTestWindows(testWindows);
        return this;
    }
<p>
An array of test windows used to evaluate the algorithm. The <code>NumberOfBacktestWindows</code> from the object
determines the number of windows in the array.
</p>

@param testWindows
       An array of test windows used to evaluate the algorithm. The <code>NumberOfBacktestWindows</code> from the
       object determines the number of windows in the array.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-forecast/src/main/java/com/amazonaws/services/forecast/model/PredictorExecution.java