# File lib/openstack/compute/connection.rb, line 480
    def delete_security_group_rule(id)
      raise OpenStack::Exception::NotImplemented.new("os-security-groups not implemented by #{@connection.http.keys.first}", 501, "NOT IMPLEMENTED") unless api_extensions["os-security-groups""os-security-groups"] or api_extensions[:security_groups]
      @connection.req("DELETE", "/os-security-group-rules/#{id}")
      true
    end