public void addEdge(PcodeBlock begin, PcodeBlock end) {
		end.addInEdge(begin, 0);
	}
Add a directed edge between two blocks in this container
@param begin is the "from" block of the edge
@param end is the "to" block of the edge
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/model/pcode/BlockGraph.java