missing some dependencies

[shreyagupta30]

I am following this article: https://medium.com/jaegertracing/jaeger-data-analytics-with-jupyter-notebooks-b094fa7ab769
While running the third cell i.e., for running Trace DSL with Apache Gremlin throws this error.

|   TraceTraversal<Vertex, Vertex> traversal = graph.traversal(TraceTraversalSource.class)
cannot find symbol
  symbol:   class TraceTraversal

|   TraceTraversal<Vertex, Vertex> traversal = graph.traversal(TraceTraversalSource.class)
cannot find symbol
  symbol:   class Vertex

|   TraceTraversal<Vertex, Vertex> traversal = graph.traversal(TraceTraversalSource.class)
cannot find symbol
  symbol:   class Vertex

|   TraceTraversal<Vertex, Vertex> traversal = graph.traversal(TraceTraversalSource.class)
cannot find symbol
  symbol:   class TraceTraversalSource

|           .repeat(__.out())
cannot find symbol
  symbol:   variable __

|           .until(__.hasName("SQL SELECT"));
cannot find symbol
  symbol:   variable __

cc : @jpkrohling

[jpkrohling]

@pavolloffay, looks like a missing dependency on a pom.xml somewhere?