public void makeCallgraphLink(FunctionDescription src, FunctionDescription dest, int lhash) {
		src.insertCall(dest, lhash);
	}
Mark a parent/child relationship between to functions
@param src is the parent FunctionDescription
@param dest is the child FunctionDescription
@param lhash is a hash indicating where in -src- the call to -dest- is made
Ghidra/Features/BSim/src/main/java/ghidra/features/bsim/query/description/DescriptionManager.java