public void setClientRequestToken(String clientRequestToken) {
        this.clientRequestToken = clientRequestToken;
    }
<p>
A unique, client-generated idempotency token that, when provided in a request, ensures the request cannot be
repeated with a changed parameter. If a request is received with the same parameters and a token is included, the
request returns information about the initial request that used that token.
</p>

@param clientRequestToken
       A unique, client-generated idempotency token that, when provided in a request, ensures the request cannot
       be repeated with a changed parameter. If a request is received with the same parameters and a token is
       included, the request returns information about the initial request that used that token.
aws-java-sdk-codecommit/src/main/java/com/amazonaws/services/codecommit/model/Comment.java