CYPHER_GET_ACTIVE_BRANCH_HEAD

CYPHER_GET_ACTIVE_BRANCH_HEAD = '\nMATCH (
  t:Thread {thread_id: $thread_id, checkpoint_ns: $checkpoint_ns})\n      -[:ACTIVE_BRANCH]->(b:Branch)\n      -[:HEAD]->(c:Checkpoint)\nOPTIONAL MATCH (c)-[:PREVIOUS]->(parent:Checkpoint
)\nRETURN t.thread_id as thread_id,\n       t.checkpoint_ns as checkpoint_ns,\n       c.checkpoint_id as checkpoint_id,\n       parent.checkpoint_id as parent_checkpoint_id,\n       c.type as type,\n       c.checkpoint as checkpoint,\n       c.metadata as metadata,\n       b.branch_id as branch_id,\n       b.name as branch_name\n'