public static <A> Builder<A> build() {
        return new Builder<>();
    }
The {@code SackStrategy} is used internal to the {@code withSack()} steps of {@link TraversalSource} and is not
typically constructed directly.

@author Marko A. Rodriguez (http://markorodriguez.com)
gremlin-core/src/main/java/org/apache/tinkerpop/gremlin/process/traversal/strategy/decoration/SackStrategy.java