// already demangled.
	name := fn.SystemName
	if looksLikeDemangledCPlusPlus(name) {
		for _, o := range options {
			switch o {
			case demangle.NoParams:
				name = removeMatching(name, '(', ')')
			case demangle.NoTemplateParams:
				name = removeMatching(name, '<', '>')
			}
		}
	}
	fn.Name = name
}

// looksLikeDemangledCPlusPlus is a heuristic to decide if a name is