code: public void removeVertex(AtlasVertex vertex) {
          String vertexString = null;
  
          if (LOG.isDebugEnabled()) {
              vertexString = string(vertex);
  
              LOG.debug("Removing {}", vertexString);
          }
  
          graph.removeVertex(vertex);
  
          if (LOG.isDebugEnabled()) {
              LOG.info("Removed {}", vertexString);
          }
      }
docs: Remove the specified AtlasVertex from the graph.
  
  @param vertex