public void setStepsList(java.util.Collection<UpgradeStepItem> stepsList) {
        if (stepsList == null) {
            this.stepsList = null;
            return;
        }

        this.stepsList = new java.util.ArrayList<UpgradeStepItem>(stepsList);
    }
<p>
A list of each step performed as part of a specific upgrade or upgrade eligibility check.
</p>

@param stepsList
       A list of each step performed as part of a specific upgrade or upgrade eligibility check.
aws-java-sdk-opensearch/src/main/java/com/amazonaws/services/opensearch/model/UpgradeHistory.java