OptionalindexThe index of the content item within the popup's content list.
OptionaltextThe text value of "text" content types. This property is invalid for all other content types.
OptionaltitleThe title of the content. For "expression" content types, this is the title of the expressionInfo. This property is invalid for "text" and "custom" content types.
The content type.
A set of properties used to reference an ESRI Content instance.