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The RequesterRegex (basic:AttributeRequesterRegex prior to V3.2) is a PolicyRule which returns true if the entityID of the party requesting the attributes (usually the SP) matches the supplied Java regular expression.
Schema Name
The RequesterRegex type is defined in the urn:mace:shibboleth:2.0:afp namespace, the schema for which can be located at http://shibboleth.net/schema/idp/shibboleth-afp.xsd
Prior to V3.2, the The deprecated basic:AttributeRequesterRegex type is defined in the urn:mace:shibboleth:2.0:afp:mf:basic namespace, the schema for which can be located at http://shibboleth.net/schema/idp/shibboleth-afp-mf-basic.xsd
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