src/main/java/com/uploadcare/api/RequestHelper.java
private static String streamToString(InputStream is) {
        java.util.Scanner s = new java.util.Scanner(is, "UTF-8").useDelimiter("\\A");
        return s.hasNext() ? s.next() : "";
    }
private static String streamToString(InputStream is) {
        java.util.Scanner s = new java.util.Scanner(is, "UTF-8").useDelimiter("\\A");
        return s.hasNext() ? s.next() : "";
    }
Convert an InputStream into a String object. Method taken from http://stackoverflow.com/a/5445161/521535

@param is The stream to be converted
@return The resulting String