syntax_data: {"ast_node_type":"other","tokens":[{"end":40,"kind":"keyword","start":0,"text":"ConfigMacrosLen:"}]}
source_snippet:         ConfigMacrosLen: ::libc::size_t,
context_before:         ConfigMacros: *const ::libc::c_char,
context_after:         IncludePath: *const ::libc::c_char,