@Override
	protected void encodeBody(Encoder encoder) throws IOException {
		super.encodeBody(encoder);
		encoder.openElement(ELEM_TARGET);
		PcodeBlock leaf = gototarget.getFrontLeaf();
		int depth = gototarget.calcDepth(leaf);
		encoder.writeSignedInteger(ATTRIB_INDEX, leaf.getIndex());
		encoder.writeSignedInteger(ATTRIB_DEPTH, depth);
		encoder.writeSignedInteger(ATTRIB_TYPE, gototype);
		encoder.closeElement(ELEM_TARGET);
	}
A "plain" goto block
    possible multiple incoming edges
    no outgoing edges
    1 (implied) outgoing edge representing the unstructured goto
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/model/pcode/BlockGoto.java