public boolean isBackEdge() {
		GridPoint start = points.get(0);
		GridPoint end = points.get(points.size() - 1);
		return start.row >= end.row;
	}
Returns true if this edge ends at or above its start row.
@return true if this edge ends at or above its start row
Ghidra/Features/FunctionGraph/src/main/java/ghidra/app/plugin/core/functiongraph/graph/layout/flowchart/EdgeSegment.java