@Override
    public boolean setArguments(List<Object> arguments) {
        assert arguments.size() == getArity();

        Optional<String> argument = CommandUtils.getStringArgument(arguments.get(0));
        if (argument.isEmpty()) return false;

        schemaName = argument.get();

        return true;
    }
FindDocument
Param: schema identifier
Returns List of Location, possibly empty.
integration/schema-language-server/language-server/src/main/java/ai/vespa/schemals/lsp/common/command/commandtypes/FindDocument.java