public void setForecastDimensions(java.util.Collection<String> forecastDimensions) {
        if (forecastDimensions == null) {
            this.forecastDimensions = null;
            return;
        }

        this.forecastDimensions = new java.util.ArrayList<String>(forecastDimensions);
    }
<p>
An array of dimension (field) names that specify how to group the generated forecast.
</p>
<p>
For example, if you are generating forecasts for item sales across all your stores, and your dataset contains a
<code>store_id</code> field, you would specify <code>store_id</code> as a dimension to group sales forecasts for
each store.
</p>

@param forecastDimensions
       An array of dimension (field) names that specify how to group the generated forecast.</p>
       <p>
       For example, if you are generating forecasts for item sales across all your stores, and your dataset
       contains a <code>store_id</code> field, you would specify <code>store_id</code> as a dimension to group
       sales forecasts for each store.
aws-java-sdk-forecast/src/main/java/com/amazonaws/services/forecast/model/CreateAutoPredictorRequest.java