registerPortrait()

/**
   * Register the Collective Portrait.
   *
   * @remarks
   * Registering the Collective Portrait will register the Collective Portrait with the Portrait Protocol.
   *
   * @param {number} payableAmount - The amount of ether to pay for the registration.
   * @param {CollectivePortraitName} identity - The name of the Collective Portrait that the user would like to register.
   * @param {number} shares - The number of shares to register the Collective Portrait with.
   * @param {number} minimumControlshares - The minimum number of shares required to control the Collective Portrait.
   * @param {number} years - The number of years to register the Collective Portrait for.
   * @returns {ethers.ContractTransaction} - The transaction object of the transaction that registers the Collective Portrait.
   * @beta
   * @async
   */
  registerPortrait(
    payableAmount: number,
    identity: CollectivePortraitName,
    shares: number,
    minimumControlshares: number,
    years: number,
  ): Promise<ethers.ContractTransaction> {
    return this.portrait.portraitCollectiveContract.registerPortrait(
      payableAmount,
      identity,
      shares,
      minimumControlshares,
      years,
    );
  }