code: private Response call(Method method, String endpoint, Request params, File inputFile) {
          StringBuilder action = new StringBuilder();
          action.append("Making <i>");
          action.append(method.toString());
          action.append("</i> call to <i>");
          action.append(http.getServiceBaseUrl()).append(endpoint).append(http.getRequestParams(params));
          action.append("</i>");
          action.append("<div class='indent'>");
          action.append(Reporter.getCredentialStringOutput(http));
          action.append(Reporter.getRequestHeadersOutput(http));
          action.append(Reporter.getRequestPayloadOutput(params, inputFile));
          action.append("</div>");
          String expected = "<i>" + method + "</i> call was performed";
          Response response = null;
          try {
              switch (method) {
                  case GET:
                      response = http.get(endpoint, params);
                      break;
                  case POST:
                      response = http.post(endpoint, params, inputFile);
                      break;
                  case PUT:
                      response = http.put(endpoint, params, inputFile);
                      break;
                  case DELETE:
                      response = http.delete(endpoint, params, inputFile);
                      break;
              }
              String actual = expected;
              actual += "<div class='indent'>";
              actual += Reporter.getResponseHeadersOutput(response);
              actual += Reporter.getResponseCodeOutput(response);
              actual += Reporter.getResponseOutput(response);
              actual += "</div>";
              reporter.pass(action.toString(), expected, actual);
          } catch (Exception e) {
              reporter.fail(action.toString(), expected, "<i>" + method + "</i> call failed. " + e.getMessage());
          }
          return response;
      }
docs: Performs an http call and writes the call and response information to the
  output file
  
  @param method     - what http method call is being made. should be in all caps
  @param endpoint - the endpoint of the service under test
  @param params   - the parameters to be passed to the endpoint for the service
  call
  @return Response: the response provided from the http call