int setRows(int startRow) {

			int row = startRow;

			for (DecompilerBlock block : allChildren) {
				if (block instanceof DecompilerBlockGraph) {
					row = ((DecompilerBlockGraph) block).setRows(row);
				}
				else {
					block.setRow(row++);
				}
			}

			return row;
		}
A class that represents 2D information about the contained vertex, such as location,
bounds, row and column of the layout grid.
Ghidra/Features/FunctionGraphDecompilerExtension/src/main/java/ghidra/app/plugin/core/functiongraph/graph/layout/DecompilerNestedLayout.java