Required Associated Typeswift 6.1.2_Differentiation
TangentVector
A type representing a differentiable value’s derivatives.
associatedtype TangentVector : AdditiveArithmetic, Differentiable where Self.TangentVector == Self.TangentVector.TangentVectorMathematically, this is equivalent to the tangent bundle of the differentiable manifold represented by the differentiable type.