public String getMasterUserPassword() {
        return this.masterUserPassword;
    }
<p>
The password for the master user. The password can include any printable ASCII character except "/", """, or "@".
It cannot contain spaces.
</p>
<p>
<b>MySQL</b>
</p>
<p>
Constraints: Must contain from 8 to 41 characters.
</p>
<p>
<b>PostgreSQL</b>
</p>
<p>
Constraints: Must contain from 8 to 128 characters.
</p>

@return The password for the master user. The password can include any printable ASCII character except "/",
        """, or "@". It cannot contain spaces.</p>
        <p>
        <b>MySQL</b>
        </p>
        <p>
        Constraints: Must contain from 8 to 41 characters.
        </p>
        <p>
        <b>PostgreSQL</b>
        </p>
        <p>
        Constraints: Must contain from 8 to 128 characters.
aws-java-sdk-lightsail/src/main/java/com/amazonaws/services/lightsail/model/CreateRelationalDatabaseRequest.java