- Filter collaborators from export.

wise-webapp/src/main/java/com/wisemapping/util/TimeUtils.java

@@ -0,0 +1,25 @@
+package com.wisemapping.util;
+
+import org.jetbrains.annotations.Nullable;
+
+import java.text.SimpleDateFormat;
+import java.util.Date;
+import java.util.TimeZone;
+
+final public class TimeUtils
+{
+    private static SimpleDateFormat sdf;
+    static {
+        sdf = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss");
+        sdf.setTimeZone(TimeZone.getTimeZone("UTC"));
+    }
+
+    public static String toISO8601(@Nullable Date date) {
+        String result = "";
+        if (date != null) {
+            result = sdf.format(date) + "Z";
+        }
+        return result;
+    }
+
+}