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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 adjoint(self):
 """Adjoint operator represented by the adjoint matrix. Returns ------- adjoint : `MatrixOperator` """

        return MatrixOperator(self.matrix.conj().T,
                              domain=self.range, range=self.domain,
                              axis=self.axis)