?

I'm using `bottomUp` as a kind of adaptor over a Rewriter. See https://github.com/cleishm/neo4j/blob/37cf4ed73ef6c4b82b9aae66bd55bf0330b7ca98/community/cypher/cypher-compiler-2.0/src/main/scala/org/neo4j/cypher/internal/compiler/v2_0/parser/CypherParser.scala#L68