@Override
	public int hashCode() {
		if (codeBlock == null) {
			return 0;
		}
		return codeBlock.getMinAddress().hashCode();
	}
Returns true if this vertex is not backed by a code block.
@return true if this vertex is not backed by a code block.
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/model/block/graph/CodeBlockVertex.java