public ChangeSetSummaryListItem withEntityIdList(String... entityIdList) {
        if (this.entityIdList == null) {
            setEntityIdList(new java.util.ArrayList<String>(entityIdList.length));
        }
        for (String ele : entityIdList) {
            this.entityIdList.add(ele);
        }
        return this;
    }
<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>
<p>
<b>NOTE:</b> This method appends the values to the existing list (if any). Use
{@link #setEntityIdList(java.util.Collection)} or {@link #withEntityIdList(java.util.Collection)} if you want to
override the existing values.
</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.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-marketplacecatalog/src/main/java/com/amazonaws/services/marketplacecatalog/model/ChangeSetSummaryListItem.java