@Override
		void setCol(int col) {

			//
			// The *default* structure for children's nesting:
			// -the first node is always at the root nesting level
			// -all other children are indented by 1
			//
			for (int i = 0; i < allChildren.size(); i++) {
				int column = (i == 0) ? col : col + 1;
				DecompilerBlock block = allChildren.get(i);
				block.setCol(column);
			}

			doSetCol(col);
		}
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