code: public Map<String, AtlasVertex> getVerticesForGUIDs(List<String> guids) {
  
          return getVerticesForPropertyValues(Constants.GUID_PROPERTY_KEY, guids);
      }
docs: Finds the Vertices that correspond to the given GUIDs.  GUIDs
  that are not found in the graph will not be in the map.
  
  @return GUID to AtlasVertex map with the result.