Reading Parquet Key/Value Metadata

Is there a recommended method for reading metadata key/value pairs in the footer for a parquet file?

I'm using MATLAB to extract JSON metadata added from python's pyarrow. The footer layout is documented here https://github.com/apache/parquet-format#file-format. I have the following code which works, but would prefer a more robust solution in the future.

function metadata = parquetmeta(filename)
    fid = fopen(filename);
    fseek(fid, -8, 'eof');
    footer_bytes = fread(fid, 1, 'uint32', 'ieee-le');
    fseek(fid, -footer_bytes, 'eof');
    footer = fread(fid, [1, footer_bytes], '*char');
    fclose(fid);

    start_idx = find(footer == '{', 1, 'first');
    end_idx = find(footer == '}', 1, 'last');

    metadata = struct;
    if ~isempty(start_idx) && ~isempty(end_idx)
        try %#ok<TRYNC>
            metadata = jsondecode(footer(start_idx, end_idx));
        end
    end
end

I'm hoping MathWorks will add support for reading Parquet file metadata in a future release. Interestingly, it appears this use to be included as a feature before MATLAB 2019, but cannot verify on my version of MATLAB.

jobj = com.mathworks.bigdata.parquet.Reader;
md = jobj.getParquetFileReader.getFileMetaData.getKeyValueMetaData;

Thanks!