<xs:element name="schemeMeta">
    <xs:annotation>
        <xs:documentation>Metadata about a scheme conveyed by a Knowledge Item</xs:documentation>
    </xs:annotation>
    <xs:complexType>
        <xs:sequence>
            <xs:choice minOccurs="0" maxOccurs="unbounded">
                <xs:element ref="sameAsScheme" />
                <xs:element ref="name" />
                <xs:element ref="definition" />
                <xs:element ref="note" />
                <xs:element ref="related" />
            </xs:choice>
            <xs:any namespace="##other" processContents="lax" minOccurs="0" maxOccurs="unbounded">
                <xs:annotation>
                    <xs:documentation>Extension point for provider-defined properties from other namespaces</xs:documentation>
                </xs:annotation>
            </xs:any>
        </xs:sequence>
        <xs:attribute name="uri" type="IRIType" use="required">
            <xs:annotation>
                <xs:documentation>The URI which identifies the scheme</xs:documentation>
            </xs:annotation>
        </xs:attribute>
        <xs:attribute name="preferredalias">
            <xs:annotation>
                <xs:documentation>The alias preferred by the schema authority</xs:documentation>
            </xs:annotation>
        </xs:attribute>
        <xs:attribute name="authority" type="IRIType">
            <xs:annotation>
                <xs:documentation>Defines the authority controlling the scheme </xs:documentation>
            </xs:annotation>
        </xs:attribute>
        <xs:anyAttribute namespace="##other" processContents="lax" />
    </xs:complexType>
</xs:element>