public void setTestWindows(java.util.Collection<TestWindowSummary> testWindows) {
        if (testWindows == null) {
            this.testWindows = null;
            return;
        }

        this.testWindows = new java.util.ArrayList<TestWindowSummary>(testWindows);
    }
<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.
aws-java-sdk-forecast/src/main/java/com/amazonaws/services/forecast/model/PredictorExecution.java