Used to indicate whether or
not to include element StatementMetadata when referencing an Assertion. In the case
of
signatures and binding, this attribute indicates whether or not the statement metadata
is covered by the signature or binding. If not, it cannot be cryptographically verified
and should be considered informative only. IncludesStatementMetadata should never
be set
on SignatureValue if there is a boundValueList, because the BoundValue elements in
the list
each have their own explicit includesStatementMetadata attribute.