<xs:element name="optgroup">
<xs:annotation>
<xs:documentation>
option group
</xs:documentation>
</xs:annotation>
<xs:complexType>
<xs:sequence>
<xs:element maxOccurs="unbounded" ref="option" />
</xs:sequence>
<xs:attributeGroup ref="attrs" />
<xs:attribute name="disabled">
<xs:simpleType>
<xs:restriction base="xs:token">
<xs:enumeration value="disabled" />
</xs:restriction>
</xs:simpleType>
</xs:attribute>
<xs:attribute name="label" use="required" type="Text" />
</xs:complexType>
</xs:element>
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