diff_drive_controller_rbs_plugins.xml

<library path="lib/libdiff_drive_controller_rbs">

  <class name="diff_drive_controller_rbs/DiffDriveController" type="diff_drive_controller_rbs::DiffDriveController" base_class_type="controller_interface::ControllerBase">
    <description>
      The DiffDriveController tracks velocity commands.
      It expects 2 VelocityJointInterface type of hardware interfaces.
    </description>
  </class>

</library>