class Lutaml::Model::ElementCountOutOfRangeError

def appearance
  if @range.min == @range.max
    @range.min
  else
    "between '#{@range.min}' and '#{@range.max}'"
  end
end

def initialize(attr_name, appearance_count, range)
  @attr_name = attr_name
  @appearance_count = appearance_count
  @range = range
  super()
end

def times_appeared
  if @appearance_count&.zero?
    "never appeared"
  else
    "appeared#{' only' if @appearance_count < @range.max} #{@appearance_count} time(s)"
  end
end

def to_s
  "`#{@attr_name}` expected to appear #{appearance} time(s), but #{times_appeared}."
end