The ID for this custom type. IDs must be unique across all customizations.
Namespace: http://schemas.esri.com/Desktop/AddInsSchema: DesktopAddIns_ElementOnly.xsd
Content Type
ID
Parents
ToolPalette
Syntax
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<xs:attribute name="id" type="xs:ID" use="required" xmlns:xs="http://www.w3.org/2001/XMLSchema"></xs:attribute>