How to use the snyk-policy.load function in snyk-policy

options.expiry = new Date(options.expiry);
      if (options.expiry.getTime() !== options.expiry.getTime()) {
        debug('No/invalid expiry given, using the default 30 days');
        options.expiry = new Date(Date.now() + 30 * 24 * 60 * 60 * 1000);
      }
      if (!options.reason) {
        options.reason = 'None Given';
      }

      debug(
        'changing policy: ignore "%s", for all paths, reason: "%s", until: %o',
        options.id,
        options.reason,
        options.expiry,
      );
      return policy
        .load(options['policy-path'])
        .catch((error) => {
          if (error.code === 'ENOENT') {
            // file does not exist - create it
            return policy.create();
          }
          throw Error('policyFile');
        })
        .then(function ignoreIssue(pol) {
          pol.ignore[options.id] = [
            {
              '*': {
                reason: options.reason,
                expires: options.expiry,
              },
            },

async function displayPolicy(path?: string): Promise {
  try {
    const loadedPolicy = (await policy.load(path || process.cwd())) as Promise<
      string
    >;
    return await display(loadedPolicy);
  } catch (error) {
    let adaptedError: CustomError;
    if (error.code === 'ENOENT') {
      adaptedError = new PolicyNotFoundError();
    } else {
      adaptedError = new FailedToLoadPolicyError();
      adaptedError.innerError = error;
    }
    throw adaptedError;
  }
}

function displayPolicy(path) {
  return policy.load(path || process.cwd())
    .then(display)
    .catch((e) => {
      let error;
      if (e.code === 'ENOENT') {
        error = new errors.PolicyNotFoundError();
      } else {
        error = new errors.FailedToLoadPolicyError();
        error.innerError = e;
      }
      throw error;
    });
}