code: @Override
      public GetRestApisResult getRestApis(GetRestApisRequest request) {
          request = beforeClientExecution(request);
          return executeGetRestApis(request);
      }
docs: <p>
  Lists the <a>RestApis</a> resources for your collection.
  </p>
  
  @param getRestApisRequest
  The GET request to list existing <a>RestApis</a> defined for your collection.
  @return Result of the GetRestApis operation returned by the service.
  @throws BadRequestException
  The submitted request is not valid, for example, the input is incomplete or incorrect. See the
  accompanying error message for details.
  @throws UnauthorizedException
  The request is denied because the caller has insufficient permissions.
  @throws TooManyRequestsException
  The request has reached its throttling limit. Retry after the specified time period.
  @sample AmazonApiGateway.GetRestApis