What's the use case for @requires and @policySets on the SCA properties?

[Raymond Feng <rfeng@us.ibm.com>]

Hi,

The assembly spec allows the @requires and
@policySets on SCA properties. What's the use case here?

3990 <!--
Property -->
3991 <complexType
name="SCAPropertyBase"
mixed="true">
3992 <sequence>
3993 <any
namespace="##any"
processContents="lax"
minOccurs="0"/>
3994 <!--
NOT an extension point; This any exists to accept
3995 the
element-based or complex type property
3996 i.e.
no element-based extension point under "sca:property" -->
3997 </sequence>
3998 <!--
mixed="true" to handle simple type -->
3999 <attribute
name="requires"
type="sca:listOfQNames"
use="optional"/>
4000 <attribute
name="policySets"
type="sca:listOfQNames"
use="optional"/>
4001 </complexType>

Thanks,
Raymond

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