private void addGraphEdge(AttributedGraph graph, PcodeBlock sourceBlock,
			AttributedVertex sourceVertex, PcodeBlock targetBlock, AttributedVertex targetVertex) {
		AttributedEdge edge = graph.addEdge(sourceVertex, targetVertex);
		if (sourceBlock.getOutSize() != 2) {
			edge.setEdgeType(BSimFeatureGraphType.CONTROL_FLOW_DEFAULT_EDGE);
			return;
		}
		//sourceBlock must end in CBRANCH, true/false edge incorporated into hash
		if (sourceBlock.getFalseOut().equals(targetBlock)) {
			edge.setEdgeType(BSimFeatureGraphType.FALSE_EDGE);
		}
		else {
			edge.setEdgeType(BSimFeatureGraphType.TRUE_EDGE);
		}
		return;
	}
Returns the {@link AttributedGraph} created by (the last firing of) this action.
@return graph
Ghidra/Features/BSimFeatureVisualizer/src/main/java/ghidra/bsfv/HighlightAndGraphAction.java