private String getString(String value) {
		StringBuffer sb = new StringBuffer();
		int count = model.getDataUnitSymbolSize();
		for (int i = 0; i < count; i++) {
			sb.append(value);
		}
		return sb.toString();
	}
Get the padded string that has the given char value.
Ghidra/Features/ByteViewer/src/main/java/ghidra/app/plugin/core/byteviewer/FieldFactory.java