code: public Accounts getChildAccounts(final String accountCode) {
          return doGET(Account.ACCOUNT_RESOURCE + "/" + accountCode + "/child_accounts", Accounts.class, new QueryParams());
      }
docs: Get Child Accounts
  <p>
  Returns information about a the child accounts of an account.
  
  @param accountCode recurly account id
  @return Accounts on success, null otherwise