# Objective works

    Code
      obj
    Output
      
      -- <ObjectiveTestEval> ---------------------------------------------------------
      * Domain:
             id    class lower upper nlevels
         <char>   <char> <num> <num>   <num>
      1:     x1 ParamDbl    -1     1     Inf
      2:     x2 ParamDbl    -1     1     Inf
      * Codomain:
             id    class lower upper
         <char>   <char> <num> <num>
      1:      y ParamDbl  -Inf   Inf

---

    Code
      obj
    Output
      
      -- <ObjectiveTestEvalMany> -----------------------------------------------------
      * Domain:
             id    class lower upper nlevels
         <char>   <char> <num> <num>   <num>
      1:     x1 ParamDbl    -1     1     Inf
      2:     x2 ParamDbl    -1     1     Inf
      * Codomain:
             id    class lower upper
         <char>   <char> <num> <num>
      1:      y ParamDbl  -Inf   Inf

