Returns the value of the role attribute for the SOAP-header-entryref object as a URI.
Data type: CHARACTER
Access: Read-only
Applies to: SOAP-header-entryref object handle
If the SOAP-header-entryref object does not contain a ROLE attribute, this attribute returns the empty string.
Note: In SOAP Version 1.2, the ROLE attribute replaces the SOAP Version 1.1 ACTOR attribute. If the ABL client is connected via SOAP Version 1.1, the ROLE attribute returns the empty string.