function createExperiment(
  name: string,
  projectName: string,
  dataset?: null | {
    dataset_id: string;
    version_index: number;
  },
  metrics?: (string | Metric)[],
): Promise<{
  aggregate_feedback?: {
    [key: string]: object;
  };
  aggregate_metrics?: {
    [key: string]: unknown;
  };
  created_at?: string;
  created_by?: null | string;
  created_by_user?: null | {
    email: string;
    first_name?: null | string;
    id: string;
    last_name?: null | string;
  };
  dataset?: null | {
    dataset_id?: null | string;
    name?: null | string;
    version_index?: null | number;
  };
  id: string;
  name?: string;
  num_samples?: null | number;
  playground?: null | {
    name?: null | string;
    playground_id?: null | string;
  };
  playground_id?: null | string;
  project_id: string;
  prompt?: null | {
    content?: null | string;
    name?: null | string;
    prompt_template_id?: null | string;
    version_index?: null | number;
  };
  prompt_model?: null | string;
  prompt_run_settings?: null | {
    deployment_name?: null | string;
    echo?: boolean;
    frequency_penalty?: number;
    known_models?: object[];
    logprobs?: boolean;
    max_tokens?: number;
    model_alias?: string;
    n?: number;
    presence_penalty?: number;
    reasoning_effort?: string;
    response_format?: null | {
      [key: string]: string;
    };
    stop_sequences?: null | string[];
    temperature?: number;
    tool_choice?:
      | null
      | string
      | {
          function: {
            name: string;
          };
          type?: string;
        };
    tools?: null | object[];
    top_k?: number;
    top_logprobs?: number;
    top_p?: number;
    verbosity?: string;
  };
  rank?: null | number;
  ranking_score?: null | number;
  status?: {
    log_generation?: {
      progress_percent?: number;
    };
  };
  tags?: {
    [key: string]: object[];
  };
  task_type:
    | 0
    | 1
    | 2
    | 3
    | 4
    | 5
    | 6
    | 7
    | 8
    | 9
    | 10
    | 11
    | 12
    | 13
    | 14
    | 15
    | 16
    | 17
    | 18;
  updated_at?: null | string;
  winner?: null | boolean;
}>;