<?xml version="1.0" ?>
<sdf version='1.7'>
  <model name="model_invalid_reserved_names">
    <frame name="__frame__"/>               <!-- INVALID: names may not start and end with __. -->
    <link name="world"/>                    <!-- INVALID: world is a reserved name. -->
    <link name="__link__">                  <!-- INVALID: names may not start and end with __. -->
      <pose>0 0 0 0 0 0</pose>
      <collision name="__collision__">      <!-- INVALID: names may not start and end with __. -->
        <geometry/>
      </collision>
      <visual name="__visual__">            <!-- INVALID: names may not start and end with __. -->
        <geometry/>
      </visual>
    </link>
    <joint name="__joint__" type="fixed">   <!-- INVALID: names may not start and end with __. -->
      <parent>world</parent>
      <child>__link__</child>
    </joint>
  </model>
</sdf>
