SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function countMatches (children 1)
     ExpressionList (children 2)
      Literal \'foo.com bar.com baz.com bam.com\'
      Literal \'([^. ]+)\\\\.([^. ]+)\'