@Override
	public RowSegment<E> previousSegment() {
		return previous;
	}
Checks if the given column segments overlaps vertically.
@param other the other column segment to compare
@return true if these would overlap if drawn with same x column coordinate
Ghidra/Features/FunctionGraph/src/main/java/ghidra/app/plugin/core/functiongraph/graph/layout/flowchart/ColumnSegment.java