if true then a previous occurrence of that variable is overridden.
if false then a previous occurrence of that variable leads to an error
Users must specify return items for the projection, either all variables (*), no variables (-), or explicit expressions.
Users must specify return items for the projection, either all variables (*), no variables (-), or explicit expressions. Neo4j does not support the no variables case on the surface, but it may appear as the result of expanding the star (*) when no variables are in scope. This field is true if the dash (-) was used by a user.