public void setNamespaceDenyList(Set<String> namespaceDenyList) {
            this.namespaceDenyList = namespaceDenyList;
        }
Sets a list of namespaces that cannot be referred to in metadata suppressions.

<p>Metadata suppressions that refer to namespaces in this list,
including "*", will be removed.

<p>This setting cannot be used in tandem with {@code namespaceAllowList}.

@param namespaceDenyList Namespaces to deny.
smithy-build/src/main/java/software/amazon/smithy/build/transforms/FilterSuppressions.java