code: @Override
      public DescribeLoaResult describeLoa(DescribeLoaRequest request) {
          request = beforeClientExecution(request);
          return executeDescribeLoa(request);
      }
docs: <p>
  Gets the LOA-CFA for a connection, interconnect, or link aggregation group (LAG).
  </p>
  <p>
  The Letter of Authorization - Connecting Facility Assignment (LOA-CFA) is a document that is used when
  establishing your cross connect to AWS at the colocation facility. For more information, see <a
  href="https://docs.aws.amazon.com/directconnect/latest/UserGuide/Colocation.html">Requesting Cross Connects at
  AWS Direct Connect Locations</a> in the <i>AWS Direct Connect User Guide</i>.
  </p>
  
  @param describeLoaRequest
  @return Result of the DescribeLoa operation returned by the service.
  @throws DirectConnectServerException
  A server-side error occurred.
  @throws DirectConnectClientException
  One or more parameters are not valid.
  @sample AmazonDirectConnect.DescribeLoa
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/directconnect-2012-10-25/DescribeLoa" target="_top">AWS API
  Documentation</a>