public GType getType() {
        return this.type;
    }
Gets the type of the value. The explicit type could be determined with {@code instanceof} on the value, but this
might be helpful for cases where the value was constructed with a {@code null} value which might just return as
{@code Object}.
gremlin-core/src/main/java/org/apache/tinkerpop/gremlin/process/traversal/step/GValue.java