code: @Override
      public ListEmailIdentitiesResult listEmailIdentities(ListEmailIdentitiesRequest request) {
          request = beforeClientExecution(request);
          return executeListEmailIdentities(request);
      }
docs: <p>
  Returns a list of all of the email identities that are associated with your Amazon Pinpoint account. An identity
  can be either an email address or a domain. This operation returns identities that are verified as well as those
  that aren't.
  </p>
  
  @param listEmailIdentitiesRequest
  A request to list all of the email identities associated with your Amazon Pinpoint account. This list
  includes identities that you've already verified, identities that are unverified, and identities that were
  verified in the past, but are no longer verified.
  @return Result of the ListEmailIdentities operation returned by the service.
  @throws TooManyRequestsException
  Too many requests have been made to the operation.
  @throws BadRequestException
  The input you provided is invalid.
  @sample AmazonPinpointEmail.ListEmailIdentities
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/pinpoint-email-2018-07-26/ListEmailIdentities"
  target="_top">AWS API Documentation</a>