def get_newick_string(source_path, type='nwk'):
    """
    Get the newick tree as string from a newick file, a hdf5 file or from the note tag of an orthoXML
    Args:
        | newick_source: path of the file
        | type: type of file where to fetch the newick tree. Available: "nwk", "h5" and "orthoXML"
    """
    if type == 'nwk':
        with open(source_path, 'r') as nwk_file:
            return nwk_file.read()
    elif type == 'phylip':
        pass
    elif type == 'h5':
        pass
    elif type == 'orthoXML':
        pass
