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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def run_step_group(pipeline_definition, step_group_name, context):
 """Get the specified step group from the pipeline and run its steps."""

    logger.debug(f"starting {step_group_name}")
    assert step_group_name

    steps = get_pipeline_steps(pipeline=pipeline_definition,
                               steps_group=step_group_name)

    run_pipeline_steps(steps=steps, context=context)

    logger.debug(f"done {step_group_name}")