The required value attribute specifies the string value of this entity attribute.
Source
<xs:complexType name="AttributeStrType"><xs:annotation><xs:documentation>The AttributeStrType defines an entity attribute of string type.</xs:documentation></xs:annotation><xs:complexContent><xs:extension base="AttributeBaseType"><xs:attribute name="value" type="xs:string" use="required"><xs:annotation><xs:documentation>The required value attribute specifies the string value of this entity attribute.</xs:documentation></xs:annotation></xs:attribute></xs:extension></xs:complexContent></xs:complexType>
<xs:attribute name="value" type="xs:string" use="required"><xs:annotation><xs:documentation>The required value attribute specifies the string value of this entity attribute.</xs:documentation></xs:annotation></xs:attribute>