private boolean isResolvedExternalAddress(TableModel model, Address extAddr) {

		if (!(model instanceof ProgramTableModel)) {
			return false;
		}
		ProgramTableModel programTableModel = (ProgramTableModel) model;

		Program program = programTableModel.getProgram();
		if (program == null) {
			return false; // can happen when program closed
		}

		Symbol s = program.getSymbolTable().getPrimarySymbol(extAddr);
		ExternalLocation extLoc = program.getExternalManager().getExternalLocation(s);
		String path = program.getExternalManager().getExternalLibraryPath(extLoc.getLibraryName());
		return (path != null && path.length() > 0);
	}
Constructs a new GhidraTableCellRenderer using the specified font.
@param f the font to use when rendering text in the table cells
Ghidra/Features/Base/src/main/java/ghidra/util/table/GhidraTableCellRenderer.java