<?xml version="1.0" ?>
<sdf version="1.6">
  <world name="default">
    <physics name="fast" type="ignored">
      <real_time_factor>0</real_time_factor>
    </physics>

    <plugin
      filename="TestWorldSystem"
      name="ignition::gazebo::TestWorldSystem">
      <world_key>0.123</world_key>
    </plugin>

    <model name="box">
      <plugin
        filename="TestModelSystem"
        name="ignition::gazebo::TestModelSystem">
        <model_key>987</model_key>
      </plugin>
      <link name="link_1">
        <sensor name="camera" type="camera">
          <plugin
            filename="TestSensorSystem"
            name="ignition::gazebo::TestSensorSystem">
            <sensor_key>456</sensor_key>
          </plugin>
        </sensor>
      </link>
    </model>
  </world>
</sdf>
