def machine_function(project_data, prerequisites):
    return {'version': 'test_v2'}
Look for the column referenced by a foreign constraint
dataset/ETHPy150Open unlimitedlabs/orchestra/orchestra/tests/workflows/test_dir/v2/machine.py/machine_function--crossover with--dataset/ETHPy150Open cloudera/hue/desktop/core/ext-py/South-1.0.2/south/db/mysql.py/DatabaseOperations._lookup_reverse_constraint