code: func (client *Client) GetIsolationSegment(guid string) (IsolationSegment, Warnings, error) {
  	request, err := client.newHTTPRequest(requestOptions{
  		RequestName: internal.GetIsolationSegmentRequest,
  		URIParams:   map[string]string{"isolation_segment_guid": guid},
  	})
  	if err != nil {
  		return IsolationSegment{}, nil, err
  	}
  	var isolationSegment IsolationSegment
  	response := cloudcontroller.Response{
  		DecodeJSONResponseInto: &isolationSegment,
  	}
  
  	err = client.connection.Make(request, &response)
  	if err != nil {
  		return IsolationSegment{}, response.Warnings, err
  	}
  
  	return isolationSegment, response.Warnings, nil
  }
docs: // GetIsolationSegment returns back the requested isolation segment that
  // matches the GUID.