<attribute_or_method_reference xmlns="http://www.sqlparser.com/xml/ansi2003">
  <value_expression_primary>{1,1}</value_expression_primary>
  <deference_operator>{1,1}</deference_operator>
  <qualified_identifier>{1,1}</qualified_identifier>
  <sql_argument_list>{0,1}</sql_argument_list>
</attribute_or_method_reference>

<xs:element name="attribute_or_method_reference">
  <xs:complexType>
    <xs:sequence>
      <xs:element ref="value_expression_primary"/>
      <xs:element ref="deference_operator"/>
      <xs:element ref="qualified_identifier"/>
      <xs:element ref="sql_argument_list" minOccurs="0"/>
    </xs:sequence>
  </xs:complexType>
</xs:element>