syntax_data: {"ast_node_type":"other","tokens":[{"end":86,"kind":"keyword","start":0,"text":"merge_functions:"}]}
source_snippet:     merge_functions: Option<MergeFunctions> = (None, parse_merge_functions, [TRACKED],
context_before:         as source scopes (default: no)"),
context_after:         "control the operation of the MergeFunctions LLVM pass, taking \