class RSpec::Core::Configuration

def self.add_setting(name, opts={})

Other tags:
    Private: - 
def self.add_setting(name, opts={})
  raise "Use the instance add_setting method if you want to set a default" if opts.key?(:default)
  attr_writer name
  add_read_only_setting name
  Array(opts[:alias_with]).each do |alias_name|
    define_aliases(name, alias_name)
  end
end