private static String getBookmarkType(String propertyName) {
		if (propertyName == null) {
			return null;
		}
		if (propertyName.startsWith(BASE_PROPERTY_NAME)) {
			int baseLen = BASE_PROPERTY_NAME.length();
			if (propertyName.length() == baseLen) {
				return BookmarkType.NOTE;
			}
			return propertyName.substring(baseLen);
		}
		return null;
	}
Get the bookmark type associated with the specified property name.
@param propertyName
@return bookmark type or null if property name is not recognized.
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/database/bookmark/OldBookmarkManager.java