old_contents: #!/usr/bin/env python3
  
  from .additive_structure_kernel import AdditiveStructureKernel
  from .cylindrical_kernel import CylindricalKernel
  from .cosine_kernel import CosineKernel
  from .multi_device_kernel import MultiDeviceKernel
  from .grid_interpolation_kernel import GridInterpolationKernel
  from .grid_kernel import GridKernel
  from .index_kernel import IndexKernel
  from .inducing_point_kernel import InducingPointKernel
  from .kernel import AdditiveKernel, Kernel, ProductKernel
  from .lcm_kernel import LCMKernel
  from .linear_kernel import LinearKernel
  from .matern_kernel import MaternKernel
  from .multitask_kernel import MultitaskKernel
  from .newton_girard_additive_kernel import NewtonGirardAdditiveKernel
  from .periodic_kernel import PeriodicKernel
  from .polynomial_kernel import PolynomialKernel
  from .polynomial_kernel_grad import PolynomialKernelGrad
  from .product_structure_kernel import ProductStructureKernel
  from .rbf_kernel import RBFKernel
  from .rbf_kernel_grad import RBFKernelGrad
  from .scale_kernel import ScaleKernel
  from .spectral_mixture_kernel import SpectralMixtureKernel
  from .white_noise_kernel import WhiteNoiseKernel
  
  
  __all__ = [
      "Kernel",
      "AdditiveKernel",
      "AdditiveStructureKernel",
      "CylindricalKernel",
      "MultiDeviceKernel",
      "CosineKernel",
      "GridKernel",
      "GridInterpolationKernel",
      "IndexKernel",
      "InducingPointKernel",
      "LCMKernel",
      "LinearKernel",
      "MaternKernel",
      "MultitaskKernel",
      "NewtonGirardAdditiveKernel",
      "PeriodicKernel",
      "PolynomialKernel",
      "PolynomialKernelGrad",
      "ProductKernel",
      "ProductStructureKernel",
      "RBFKernel",
      "RBFKernelGrad",
      "ScaleKernel",
      "SpectralMixtureKernel",
      "WhiteNoiseKernel",
  ]
  
new_contents: #!/usr/bin/env python3
  
  from .additive_structure_kernel import AdditiveStructureKernel
  from .cosine_kernel import CosineKernel
  from .multi_device_kernel import MultiDeviceKernel
  from .grid_interpolation_kernel import GridInterpolationKernel
  from .grid_kernel import GridKernel
  from .index_kernel import IndexKernel
  from .inducing_point_kernel import InducingPointKernel
  from .kernel import AdditiveKernel, Kernel, ProductKernel
  from .lcm_kernel import LCMKernel
  from .linear_kernel import LinearKernel
  from .matern_kernel import MaternKernel
  from .multitask_kernel import MultitaskKernel
  from .newton_girard_additive_kernel import NewtonGirardAdditiveKernel
  from .periodic_kernel import PeriodicKernel
  from .product_structure_kernel import ProductStructureKernel
  from .rbf_kernel import RBFKernel
  from .rbf_kernel_grad import RBFKernelGrad
  from .scale_kernel import ScaleKernel
  from .spectral_mixture_kernel import SpectralMixtureKernel
  from .white_noise_kernel import WhiteNoiseKernel
  
  
  __all__ = [
      "Kernel",
      "AdditiveKernel",
      "AdditiveStructureKernel",
      "MultiDeviceKernel",
      "CosineKernel",
      "GridKernel",
      "GridInterpolationKernel",
      "IndexKernel",
      "InducingPointKernel",
      "LCMKernel",
      "LinearKernel",
      "MaternKernel",
      "MultitaskKernel",
      "NewtonGirardAdditiveKernel",
      "PeriodicKernel",
      "ProductKernel",
      "ProductStructureKernel",
      "RBFKernel",
      "RBFKernelGrad",
      "ScaleKernel",
      "SpectralMixtureKernel",
      "WhiteNoiseKernel",
  ]
  
subject: add newton girard additive kernel