public boolean isMissingNodeFlags(final NodeFlag... nodeFlags) {
        if (NullSafe.hasItems(this.nodeFlags)) {
            return NullSafe.stream(nodeFlags)
                    .noneMatch(this.nodeFlags::contains);
        } else {
            return true;
        }
    }
@return True if this node's set of {@link NodeFlag}s is missing ALL the flags in nodeFlags.
stroom-core-shared/src/main/java/stroom/explorer/shared/ExplorerNode.java