Get the value of the .max/.min property as an Expression. Lazily computes the value and caches it in maxval/minval. Reports any errors.
location to use for error messages
Id::max or Id::min
corresponding value of .max/.min
See Implementation
Get the value of the .max/.min property as an Expression. Lazily computes the value and caches it in maxval/minval. Reports any errors.