Add functionality change billed hours

@@ -93,6 +93,21 @@ public class YoutrackAPI {
         return result;
     }
 
+    public void setTotalBilledHours(String issueSignature, Long billedHours) {
+        String url = serviceLocation + "/rest/issue/" + issueSignature + "/execute";
+        ArrayList<NameValuePair> requestParameters = new ArrayList<NameValuePair>();
+        requestParameters.add(new NameValuePair("command", "Billed hours " + billedHours));
+        try {
+            WebRequest request = new WebRequest(new URL(url), HttpMethod.POST);
+            request.setRequestParameters(requestParameters);
+            webClient.getPage(request);
+        } catch (MalformedURLException e) {
+            e.printStackTrace();
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+
     public void setTotalIssueDuration(String issueSignature, Long issueTotalDuration){
         String url = serviceLocation + "/rest/issue/" + issueSignature + "/execute";
         ArrayList<NameValuePair> requestParameters = new ArrayList<NameValuePair>();