public Builder docRef(final DocRef docRef) {
            if (docRef != null) {
                this.type = docRef.getType();
                this.uuid = docRef.getUuid();
                this.name = docRef.getName();
            }

            return this;
        }
@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