public PrefetchRetrieval clearDynamicVariablesEntries() {
        this.dynamicVariables = null;
        return this;
    }
Removes all the entries added into DynamicVariables.

@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-mediatailor/src/main/java/com/amazonaws/services/mediatailor/model/PrefetchRetrieval.java