<xs:complexType name="CT_Operator" xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:choice minOccurs="0" maxOccurs="unbounded">
<xs:element name="state" type="CT_State" />
<xs:element name="and" type="CT_Operator" />
<xs:element name="or" type="CT_Operator" />
<xs:element name="not" type="CT_Operator" />
</xs:choice>
</xs:complexType>
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