syntax_data: {"ast_node_type":"other","tokens":[{"end":66,"kind":"keyword","start":0,"text":"///"}]}
source_snippet:     /// Environment variables to be set for the linker invocation.
context_before:     pub link_script: Option<StaticCow<str>>,
context_after:     pub link_env: StaticCow<[(StaticCow<str>, StaticCow<str>)]>,