CreateFunctionQuery 02483_plusthree (children 2)
 Identifier 02483_plusthree
 Function lambda (children 1)
  ExpressionList (children 2)
   Function tuple (children 1)
    ExpressionList (children 1)
     Identifier a
   Function plus (children 1)
    ExpressionList (children 2)
     Identifier a
     Literal UInt64_3