int getOldParameter(String name) throws IOException {
		if (versionFile == null) {
			throw new IOException("Version file is closed");
		}
		return versionFile.getParameter(name);
	}
Get a parameter value associated with the original buffer file.
@param name parameter name
@return parameter value
@throws IOException
Ghidra/Framework/DB/src/main/java/db/buffers/VersionFile.java