class ActionDispatch::Routing::Mapper::Mapping

def self.build(scope, set, ast, controller, default_action, to, via, formatted, options_constraints, anchor, options)
  scope_params = {
    blocks: scope[:blocks] || [],
    constraints: scope[:constraints] || {},
    defaults: (scope[:defaults] || {}).dup,
    module: scope[:module],
    options: scope[:options] || {}
  }
  new set: set, ast: ast, controller: controller, default_action: default_action,
      to: to, formatted: formatted, via: via, options_constraints: options_constraints,
      anchor: anchor, scope_params: scope_params, options: scope_params[:options].merge(options)
end