public void setConditionExpression(String conditionExpression) {
        this.conditionExpression = conditionExpression;
    }
<p>
A condition that must be satisfied in order for a conditional update to succeed.
</p>

@param conditionExpression
       A condition that must be satisfied in order for a conditional update to succeed.
aws-java-sdk-dynamodb/src/main/java/com/amazonaws/services/dynamodbv2/model/Put.java