The required value attribute specifies the double pair value of this entity attribute.
Source
<xs:complexType name="AttributeD2Type"><xs:annotation><xs:documentation>The AttributeD2Type defines an entity attribute of 'two doubles' type.</xs:documentation></xs:annotation><xs:complexContent><xs:extension base="AttributeBaseType"><xs:attribute name="value" type="D2Type" use="required"><xs:annotation><xs:documentation>The required value attribute specifies the double pair value of this entity attribute.</xs:documentation></xs:annotation></xs:attribute></xs:extension></xs:complexContent></xs:complexType>
<xs:attribute name="value" type="D2Type" use="required"><xs:annotation><xs:documentation>The required value attribute specifies the double pair value of this entity attribute.</xs:documentation></xs:annotation></xs:attribute>