# File lib/rds/rds.rb, line 189
    def authorize_db_security_group_ingress_ec2group(group_name, ec2_group_name, ec2_group_owner_id, options={})
      params                            = {}
      params['DBSecurityGroupName']     = group_name
      params['EC2SecurityGroupOwnerId'] = ec2_group_owner_id
      params['EC2SecurityGroupName']    = ec2_group_name
      link                              = do_request("AuthorizeDBSecurityGroupIngress", params)
    rescue Exception
      on_exception
    end