How to use the @jsii/spec.Stability.Experimental function in @jsii/spec

function describeStability(thing: Documentable, options: TypeSystemTreeOptions) {
  if (!options.stabilities) { return ''; }

  switch (thing.docs.stability) {
    case Stability.Stable: return ` (${colors.green('stable')})`;
    case Stability.Experimental: return ` (${colors.yellow('experimental')})`;
    case Stability.Deprecated: return ` (${colors.red('deprecated')})`;
  }

  return '';
}

public customTag(tag: string): string | undefined {
    return this.docs.custom?.[tag];
  }

  public get summary(): string {
    return this.docs.summary ?? '';
  }

  public get remarks(): string {
    return this.docs.remarks ?? '';
  }
}

const stabilityPrecedence = {
  [Stability.Deprecated]: 0,
  [Stability.Experimental]: 1,
  [Stability.External]: 2,
  [Stability.Stable]: 3,
};

function lowestStability(a?: Stability, b?: Stability): Stability | undefined {
  if (a === undefined) { return b; }
  if (b === undefined) { return a; }
  return stabilityPrecedence[a] < stabilityPrecedence[b] ? a : b;
}

if (isValid) {
    return true;
  }
  return 'Please enter a value';
}

/*
 * Schema that questions are built from.
 *
 * Name values for questions are built from parent keys.
 */
const schema: ConfigPromptsSchema = {
  stability: {
    type: 'list',
    message: 'Jsii Stability - stability of compiled module apis',
    default: Stability.Experimental,
    choices: Object.values(Stability)
  },
  types: {
    type: 'input',
    message: 'Jsii Type Definitions - compiled typescript definitions file for module (e.g. "index.d.ts")',
    validate: hasLength
  },
  jsii: {
    outdir: {
      type: 'input',
      message: 'Output Directory - Location for typescript compiler output (e.g. "dist")',
      default: 'dist',
      validate: hasLength
    },
    versionFormat: {
      type: 'list',