You can create a TestObject, then use it call :
WebUI.waitForElementVisible(findTestObject('your/object/path'), 5)
https://docs.katalon.com/katalon-studio/docs/manage-test-object.html#create-a-test-object
Or script the object
TestObject to = new TestObject()
String objectXpath = "//tr//td//img"
to.addProperty("xpath", ConditionType.EQUALS, objectXpath)
then WebUI.waitForElementVisible(to, 5)
Edit : you can also see this post to convert into TestObject :
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