public void setItemCount(Integer itemCount) {
        this.itemCount = itemCount;
    }
<p>
The total number of items processed in a child workflow execution. This field is returned only if
<code>mapRunArn</code> was specified in the <code>ListExecutions</code> API action. If
<code>stateMachineArn</code> was specified in <code>ListExecutions</code>, the <code>itemCount</code> field isn't
returned.
</p>

@param itemCount
       The total number of items processed in a child workflow execution. This field is returned only if
       <code>mapRunArn</code> was specified in the <code>ListExecutions</code> API action. If
       <code>stateMachineArn</code> was specified in <code>ListExecutions</code>, the <code>itemCount</code>
       field isn't returned.
aws-java-sdk-stepfunctions/src/main/java/com/amazonaws/services/stepfunctions/model/ExecutionListItem.java