lightning:utilityBarAPI testing

UtilityItem.cmp

<aura:component description="NewCaseUtilityItem"
  implements="lightning:utilityItem, force:hasRecordId"
  access="global">

  <lightning:utilityBarAPI aura:id="utilityBar" />
  <aura:attribute name="utilityItemId" type="String" default="" />

  <aura:attribute name="isActive" type="Boolean" default="false" />
  <aura:attribute name="activeRecordId" type="Id" default="" />

  <aura:handler name="init" value="{!this}" action="{!c.init}" />
  <aura:handler name="change" value="{!v.recordId}" action="{!c.onRecordChange}" />

  <c:myComponent recordId="{!v.recordId}" />

  <lightning:button
    label="Cancel"
    onclick="{!c.onCancel}"></lightning:button>

</aura:component>

UtilityItemController.js

({
  init: function(cmp, event, helper) {
    var eventHandler = function() {
      helper.getUtilityInfos(cmp);
    };

    var utilityBar = cmp.find('utilityBar');
    utilityBar.onUtilityClick({eventHandler}); // -> Error: Invalid or missing utilityId `false`
    
    /*
      This component is configured as a Utility Bar Item in my Console App.
      
      The component is configured to initialize after it is opened.
      
      Documentation states that utilityId is an optional argument if called from within a Utility Item component.
      https://developer.salesforce.com/docs/atlas.en-us.api_console.meta/api_console/sforce_api_console_lightning_getUtilityInfo.htm
      
      I am getting errors on all utility bar api methods that accept this optional utilityId argument, and I can't fathom why.
    */ 
  },

  onRecordChange: function(cmp, event, helper) {
    var newRecordId = cmp.get("v.recordId");
    console.log('newRecordId', newRecordId);
  },

  onCancel: function(cmp, event, helper) {
    console.log('canceling');
  }
})

UtilityItemHelper.js

({
  getUtilityInfos: function(cmp) {
    var utilityBar = cmp.find('utilityBar');

    utilityBar.getAllUtilityInfo()
      .then(res => {
        console.log('getAllUtilityInfo', JSON.parse(JSON.stringify(res)));
      })
      .catch(err => {
        console.error('error getAllUtilityInfo', err);
      })

    utilityBar.getUtilityInfo()
      .then(res => {
        console.log('getUtilityInfo', JSON.parse(JSON.stringify(res)));
      })
      .catch(err => {
        console.error('error getUtilityInfo', err);
      })

    utilityBar.getEnclosingUtilityId()
      .then(res => {
        console.log('getEnclosingUtilityId', JSON.parse(JSON.stringify(res)));
      })
      .catch(err => {
        console.error('error getEnclosingUtilityId', err);
      })
  }
})