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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 sia_concept_style(subsystem):
 """Compute a concept-style SystemIrreducibilityAnalysis"""

    unpartitioned_ces = _ces(subsystem)

    sia_cause = directional_sia(subsystem, Direction.CAUSE,
                                unpartitioned_ces)
    sia_effect = directional_sia(subsystem, Direction.EFFECT,
                                 unpartitioned_ces)

    return SystemIrreducibilityAnalysisConceptStyle(sia_cause, sia_effect)