def default_message
    class_counts = errors.n_x.count_by( &:class ).
      map { |klass, count| "#{ klass } (#{ count })" }.
      sort.
      join( ', ' )
    
    "#{ errors.count } error(s) occurred - #{ class_counts }"
  end
def default_message
    class_counts = errors.n_x.count_by( &:class ).
      map { |klass, count| "#{ klass } (#{ count })" }.
      sort.
      join( ', ' )
    
    "#{ errors.count } error(s) occurred - #{ class_counts }"
  end
Constructor
 ======================================================================
 Instantiate a new {MultipleErrors}.

 @param [Enumerable<Exception>] errors
   The individual errors.

 #initialize
 Instance Methods
 ========================================================================