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

        this.entityIdList = new java.util.ArrayList<String>(entityIdList);
    }
<p>
This object is a list of entity IDs (string) that are a part of a change set. The entity ID list is a maximum of
20 entities. It must contain at least one entity.
</p>

@param entityIdList
       This object is a list of entity IDs (string) that are a part of a change set. The entity ID list is a
       maximum of 20 entities. It must contain at least one entity.
aws-java-sdk-marketplacecatalog/src/main/java/com/amazonaws/services/marketplacecatalog/model/ChangeSetSummaryListItem.java