{
  "approach": "Refactor the body of the existing `sample` method into a private helper method `_sample_row(self)` that returns a single sample as a NumPy array. Then modify the public `sample(self, num_rows=1)` method to call `_sample_row` exactly `num_rows` times, collect the results, and return them as a DataFrame with the original column names.",
  "files_to_edit": [
    "copulas/multivariate/vine.py"
  ],
  "finish_reason": "stop",
  "hypothesis": "The sample method needs to call `_sample_row` iteratively based on `num_rows`. Since `_sample_row` does not exist, we need to refactor the existing sampling logic into a helper method `_sample_row`, then call it within a loop over `num_rows` rows.",
  "retries": {},
  "usage": {
    "completion": 164,
    "prompt": 8956,
    "reasoning": 0
  }
}