CreateQuery distributed_tf (children 2)
 Identifier distributed_tf
 Function cluster (children 1)
  ExpressionList (children 3)
   Function concat (children 1)
    ExpressionList (children 3)
     Literal \'test\'
     Literal \'_\'
     Literal \'shard_localhost\'
   Literal \'\'
   Function concat (children 1)
    ExpressionList (children 2)
     Literal \'buf\'
     Literal \'fer\'
