not
Exclude a specified object from the traversal.
Synopsis
not(traversal)
Description
The not() step is a filter step that excludes the objects specified.
Examples
If a vertex is not a fridgeSensor or a meal, group each vertex type and list by name:
g.V().not(hasLabel('fridgeSensor').or().hasLabel('meal')).
group().by(label).by('name')
