def METHOD_NAME(Lmax,m,s):
    n,a,b,dn,da,db = spin2Jacobi(Lmax,m,s,ds=ds)
    S =     Jacobi.operator('A',dtype=self.dtype)(da)
    S = S @ Jacobi.operator('B',dtype=self.dtype)(db)
    return (da*ds) * S(n,a,b)