<complexType name="AdditionEventPropertyType">
  <annotation>
    <documentation>Property type for addition event references. Used to wrap addition event objects or references in properties.</documentation>
  </annotation>
  <sequence>
    <element ref="diggs:AdditionEvent">
      <annotation>
        <documentation>An object that provides the history of addiltion of an additive to a fluid.</documentation>
      </annotation>
    </element>
  </sequence>
</complexType>