syntax_data: {"ast_node_type":"other","tokens":[{"end":71,"kind":"keyword","start":0,"text":"(ExternAbi::PtxKernel,"}]}
source_snippet:             (ExternAbi::PtxKernel, Arch::Nvptx) => CanonAbi::GpuKernel,
context_before:             /* gpu */
context_after:             (ExternAbi::GpuKernel, Arch::Amdgpu | Arch::Nvptx) => CanonAbi::GpuKernel,