Running Transations is broken when used as documented #336

Running a transaction as described by https://github.com/neo4jrb/neo4j-core/wiki/Transaction seems
to be broken.

Code example (inline, gist, or repo)

# session already open
Neo4j::Transaction.run do
end

will result in ArgumentError: Too few arguments thrown in neo4j-core-9.0.0/lib/neo4j/transaction.rb:148.

influenced by the source of transaction.rb#run it then tried the following

# session already open
Neo4j::Transaction.new.run do
end

which then results in NameError: uninitialized constant Neo4j::Transaction::Session thrown in neo4j-core-9.0.0/lib/neo4j/transaction.rb:120.

Runtime information:

Neo4j database version:
neo4j gem version: 9.6.0
neo4j-core gem version: 9.0.0