code: public static FlowType getKey(int ordinal) {
          if (ordinal >= 0 && ordinal < _values.length) {
              return _values[ordinal];
          }
          return null;
      }
docs: Fetch the FlowType for a particular integer.
  
  @param ordinal The integer to find a FlowType for.
  @return FlowType, null if it does match a defined FlowType