code: public AtlasEdge getEdgeForLabel(AtlasVertex vertex, String edgeLabel) {
          return getEdgeForLabel(vertex, edgeLabel, AtlasEdgeDirection.OUT);
      }
docs: Returns the active edge for the given edge label.
  If the vertex is deleted and there is no active edge, it returns the latest deleted edge
  @param vertex
  @param edgeLabel
  @return