code: public boolean isOutParameter(String key) {
          boolean isOut = false;
  
          if (this.getDirection(processKey(key)) == Direction.INOUT || this.getDirection(processKey(key)) == Direction.OUT) {
              isOut = true;
          }
  
          return isOut;
      }
docs: Checks is specified key is OUT parameter.
  OUT and INOUT parameter would be considered as OUT parameter
  
  @param key Key
  @return true - if key is OUT parameter