def vtl_exists_in_folder(path):
    for dirpath, dirname,filenames in os.walk(path):
        for f in filenames:
            ext = os.path.splitext(f)[1]
            if ext == ".vtl":
                return True
    return False

###############################################################################
vtl_exists_in_folder(path:str) -> boolean 
dataset/ETHPy150Open VisTrails/VisTrails/extensions/latex/includevistrail.py/vtl_exists_in_folder