Represents a collection of user interface (UI) elements.
The UIContainer group is used as an element of the ViewContent group.
The following example is the XML Schema declaration of the UIContainer group:
<xsd:group name="UIContainer">
   <xsd:choice>
      <xsd:element ref="xsf:toolbar" />
      <xsd:element ref="xsf:menu" />
      <xsd:element ref="xsf:menuArea" />
   </xsd:choice>
</xsd:group>