public String getPlacementId() {
        return this.placementId;
    }
<p>
A unique identifier to assign to the new game session placement. This value is developer-defined. The value must
be unique across all Regions and cannot be reused.
</p>

@return A unique identifier to assign to the new game session placement. This value is developer-defined. The
        value must be unique across all Regions and cannot be reused.
aws-java-sdk-gamelift/src/main/java/com/amazonaws/services/gamelift/model/StartGameSessionPlacementRequest.java