憲法解釋的「法適用」性格:從德國公法上法學方法論傳統對「法適用」與「法制訂」的區分探討聯邦憲法法院解釋活動的本質 The Constitutional Interpretation as law Application: The Constitutional Interpretation of the Federal Constitutional Court of Germany in Light of the Development of the Methodology of Legal Science (Juristische Methodenlehre)