@Override
    public int hashCode() {
        final int prime = 31;
        int hashCode = 1;

        hashCode = prime * hashCode + ((getTableName() == null) ? 0 : getTableName().hashCode());
        hashCode = prime * hashCode + ((getItem() == null) ? 0 : getItem().hashCode());
        hashCode = prime * hashCode + ((getExpected() == null) ? 0 : getExpected().hashCode());
        hashCode = prime * hashCode + ((getReturnValues() == null) ? 0 : getReturnValues().hashCode());
        hashCode = prime * hashCode + ((getReturnConsumedCapacity() == null) ? 0 : getReturnConsumedCapacity().hashCode());
        hashCode = prime * hashCode + ((getReturnItemCollectionMetrics() == null) ? 0 : getReturnItemCollectionMetrics().hashCode());
        hashCode = prime * hashCode + ((getConditionalOperator() == null) ? 0 : getConditionalOperator().hashCode());
        hashCode = prime * hashCode + ((getConditionExpression() == null) ? 0 : getConditionExpression().hashCode());
        hashCode = prime * hashCode + ((getExpressionAttributeNames() == null) ? 0 : getExpressionAttributeNames().hashCode());
        hashCode = prime * hashCode + ((getExpressionAttributeValues() == null) ? 0 : getExpressionAttributeValues().hashCode());
        hashCode = prime * hashCode + ((getReturnValuesOnConditionCheckFailure() == null) ? 0 : getReturnValuesOnConditionCheckFailure().hashCode());
        return hashCode;
    }
Returns a string representation of this object. This is useful for testing and debugging. Sensitive data will be
redacted from this string using a placeholder value.

@return A string representation of this object.

@see java.lang.Object#toString()
aws-java-sdk-dynamodb/src/main/java/com/amazonaws/services/dynamodbv2/model/PutItemRequest.java