public GameSession withGameProperties(java.util.Collection<GameProperty> gameProperties) {
        setGameProperties(gameProperties);
        return this;
    }
<p>
A set of key-value pairs that can store custom data in a game session. For example:
<code>{"Key": "difficulty", "Value": "novice"}</code>.
</p>

@param gameProperties
       A set of key-value pairs that can store custom data in a game session. For example:
       <code>{"Key": "difficulty", "Value": "novice"}</code>.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-gamelift/src/main/java/com/amazonaws/services/gamelift/model/GameSession.java