public int getLeftCol() {
		return Math.min(getStartCol(), getEndCol());
	}
Returns the column index of the left most column of this row segment.
@return the column index of the left most column of this row segment
Ghidra/Features/FunctionGraph/src/main/java/ghidra/app/plugin/core/functiongraph/graph/layout/flowchart/RowSegment.java