<xs:complexType name="ServiceAuthenticationModel" xmlns:xs="http://www.w3.org/2001/XMLSchema">
  <xs:sequence>
    <xs:element minOccurs="0" name="ApiKeyOrProntoID" nillable="true" type="xs:string" />
    <xs:element minOccurs="0" name="ApiSecretOrAuthData" nillable="true" type="xs:string" />
    <xs:element minOccurs="0" name="ApiUsername" nillable="true" type="xs:string" />
    <xs:element minOccurs="0" name="ApiPassword" nillable="true" type="xs:string" />
  </xs:sequence>
</xs:complexType>