public String getMasterUserName() {
        return this.masterUserName;
    }
<p>
The SAML master user name, which is stored in the domain's internal user database.
</p>

@return The SAML master user name, which is stored in the domain's internal user database.
aws-java-sdk-opensearch/src/main/java/com/amazonaws/services/opensearch/model/SAMLOptionsInput.java