public UpdateMatchmakingConfigurationRequest withAdditionalPlayerCount(Integer additionalPlayerCount) {
        setAdditionalPlayerCount(additionalPlayerCount);
        return this;
    }
<p>
The number of player slots in a match to keep open for future players. For example, if the configuration's rule
set specifies a match for a single 10-person team, and the additional player count is set to 2, 10 players will
be selected for the match and 2 more player slots will be open for future players. This parameter is not used if
<code>FlexMatchMode</code> is set to <code>STANDALONE</code>.
</p>

@param additionalPlayerCount
       The number of player slots in a match to keep open for future players. For example, if the configuration's
       rule set specifies a match for a single 10-person team, and the additional player count is set to 2, 10
       players will be selected for the match and 2 more player slots will be open for future players. This
       parameter is not used if <code>FlexMatchMode</code> is set to <code>STANDALONE</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/UpdateMatchmakingConfigurationRequest.java