public BotAliasMetadata withChecksum(String checksum) {
        setChecksum(checksum);
        return this;
    }
<p>
Checksum of the bot alias.
</p>

@param checksum
       Checksum of the bot alias.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-lexmodelbuilding/src/main/java/com/amazonaws/services/lexmodelbuilding/model/BotAliasMetadata.java