@Override
	public boolean equals(Object obj) {
		if (!(obj instanceof CodeBlockVertex)) {
			return false;
		}
		CodeBlockVertex o = (CodeBlockVertex) obj;
		if (codeBlock == null && o.codeBlock == null) {
			return true;
		}
		if (codeBlock == null || o.codeBlock == null) {
			return false;
		}

		// Assumption: we will not have two code blocks with the same min address.  (It is
		// possible that this could not be the case in a custom, user-defined block model.)
		return codeBlock.getMinAddress().equals(o.codeBlock.getMinAddress());
	}
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