syntax_data: {"ast_node_type":"other","tokens":[{"end":70,"kind":"keyword","start":0,"text":"///"}]}
source_snippet:     /// `Len` is written to contain the length of the returned string.
context_before:     ///
context_after:     pub fn LLVMGetMDString(V: LLVMValueRef, Len: *mut ::libc::c_uint) -> *const ::libc::c_char;