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

@param masterUserName
       The SAML master user name, which is stored in the domain's internal user database.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-opensearch/src/main/java/com/amazonaws/services/opensearch/model/SAMLOptionsInput.java