code: public DescribeGameSessionDetailsResult withGameSessionDetails(GameSessionDetail... gameSessionDetails) {
          if (this.gameSessionDetails == null) {
              setGameSessionDetails(new java.util.ArrayList<GameSessionDetail>(gameSessionDetails.length));
          }
          for (GameSessionDetail ele : gameSessionDetails) {
              this.gameSessionDetails.add(ele);
          }
          return this;
      }
docs: <p>
  Collection of objects containing game session properties and the protection policy currently in force for each
  session matching the request.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setGameSessionDetails(java.util.Collection)} or {@link #withGameSessionDetails(java.util.Collection)} if
  you want to override the existing values.
  </p>
  
  @param gameSessionDetails
  Collection of objects containing game session properties and the protection policy currently in force for
  each session matching the request.
  @return Returns a reference to this object so that method calls can be chained together.