public void setPropertyGroupDescriptions(java.util.Collection<PropertyGroup> propertyGroupDescriptions) {
        if (propertyGroupDescriptions == null) {
            this.propertyGroupDescriptions = null;
            return;
        }

        this.propertyGroupDescriptions = new java.util.ArrayList<PropertyGroup>(propertyGroupDescriptions);
    }
<p>
Describes the execution property groups.
</p>

@param propertyGroupDescriptions
       Describes the execution property groups.
aws-java-sdk-kinesisanalyticsv2/src/main/java/com/amazonaws/services/kinesisanalyticsv2/model/EnvironmentPropertyDescriptions.java