@Override
    public String toString() {
        final String traversalString = this.traversal.get().toString().substring(1);
        return StringFactory.vertexProgramString(this, traversalString.substring(0, traversalString.length() - 1));
    }
Get the {@link PureTraversal} associated with the current instance of the {@link TraversalVertexProgram}.

@return the pure traversal of the instantiated program
gremlin-core/src/main/java/org/apache/tinkerpop/gremlin/process/computer/traversal/TraversalVertexProgram.java