@Override
	public void decode(Decoder decoder, PcodeFactory pfactory) throws DecoderException {
		indent = (int) decoder.readSignedInteger(AttributeId.ATTRIB_INDENT);
		setText("");
	}
@return the number of indent levels following this line break
Ghidra/Features/Decompiler/src/main/java/ghidra/app/decompiler/ClangBreak.java