@Override
	public boolean equals(Object obj) {
		if (obj == null) {
			return false;
		}
		if (this == obj) {
			return true;
		}
		if (getClass() != obj.getClass()) {
			return false;
		}
		OldBookmark bookmark = (OldBookmark) obj;
		boolean addrsEqual = false;
		if (addr == null || bookmark.addr == null) {
			if (!addrString.equals(bookmark.addrString)) {
				return false;
			}
			addrsEqual = true;
		}
		else {
			if (addr.getClass() != bookmark.addr.getClass()) {
				return false;
			}
			addrsEqual = addr.equals(bookmark.addr);
		}

		return comment.equals(bookmark.comment) && category.equals(bookmark.category) &&
			type.equals(bookmark.type) && addrsEqual;
	}
Return true if this object is the same as obj.
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/database/bookmark/OldBookmark.java