modules/adb-codegen/test-resources/xsd/simple_restriction.xsd

<xs:schema targetNamespace="http://soapinterop.org/xsd"
           xmlns:xs="http://www.w3.org/2001/XMLSchema"
           xmlns:tns="http://soapinterop.org/xsd"
           elementFormDefault="qualified">
    <xs:element name="char" nillable="true" type="tns:char"/>
    <xs:simpleType name="char">
        <xs:restriction base="xs:int"/>
    </xs:simpleType>
    <xs:element name="guid" nillable="true" type="tns:guid"/>
    <xs:simpleType name="guid">
        <xs:restriction base="xs:string">
            <xs:pattern value="[\da-fA-F]{8}-[\da-fA-F]{4}-[\da-fA-F]{4}-[\da-fA-F]{4}-[\da-fA-F]{12}"/>
        </xs:restriction>
    </xs:simpleType>
</xs:schema>