text: from launch import LaunchDescription
  from launch_ros.actions import Node
  
  
  def generate_launch_description():
      return LaunchDescription([
          Node(
              package='learning_ros2_launch_by_example',
              executable='learning_ros2_launch_by_example_node',
              name='parameter_test',
              output="screen",
              parameters=[{"test_param_value": "A_param_value"}]
          ),
      ])