code: public static boolean getBooleanFromMap(String key, Map<?, ?> map) {
          boolean defaultValue = false;
          return getBooleanFromMap(key, map, defaultValue);
      }
docs: Retrieves a boolean value from a Map for the given key
  
  @param key The key that references the boolean value
  @param map The map to look in
  @return A boolean value which will be false if the map is null, the map doesn't contain the key or the value is false