restReadDocShow endpoint should work now

import com.fasterxml.jackson.databind.JsonNode;

import com.fasterxml.jackson.databind.ObjectMapper;

import edu.psu.MarkLogic.demo.model.ConfidenceFitness;

import java.io.ByteArrayOutputStream;

import java.io.File;

import java.io.IOException;

import java.net.URI;

            Credentials credentials = new UsernamePasswordCredentials("admin", "admin");  // provide username & password

            provider.setCredentials(AuthScope.ANY, credentials);

            HttpClient httpClient = HttpClientBuilder.create().setDefaultCredentialsProvider(provider).build();

            String uri = "";          // provide the REST API URI

            String uri = "http://192.168.56.200:8000/LATEST/documents?uri=" + doc_uri;          // provide the REST API URI

            System.out.println(uri);

            HttpGet get = new HttpGet(uri);

            HttpResponse response = httpClient.execute(get);

            // ba = ???               // provide the code to get byte[]

            ByteArrayOutputStream baos = new ByteArrayOutputStream();

            response.getEntity().writeTo(baos);

             ba = baos.toByteArray();              // provide the code to get byte[]

            headers.set("Content-Type", response.getEntity().getContentType().getValue());

            headers.set("Content-Disposition", "filename=" + fileName);          

        } catch (IOException ex) {

            Logger.getLogger(MLRestController.class.getName()).log(Level.SEVERE, null, ex);

            ex.printStackTrace();

        }

        return new ResponseEntity<>(ba, headers, HttpStatus.OK);

    }