public AdvancedSecurityOptionsInput withMasterUserOptions(MasterUserOptions masterUserOptions) {
        setMasterUserOptions(masterUserOptions);
        return this;
    }
<p>
Credentials for the master user: username and password, ARN, or both.
</p>

@param masterUserOptions
       Credentials for the master user: username and password, ARN, or both.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-elasticsearch/src/main/java/com/amazonaws/services/elasticsearch/model/AdvancedSecurityOptionsInput.java