HostGroup 

Either a host or a collection of hosts

Element Group Information

Model

Host | Hosts
Children: Host, Hosts

Used By

Elements Action, Hosts
Element Groups ReferenceRangeGroup, VendorHostRangeGroup
Complex Types ActionType, CatalogueType

Source 

<xs:group name="HostGroup">
  <xs:annotation>
    <xs:documentation>Either a host or a collection of hosts</xs:documentation>
  </xs:annotation>
  <xs:choice>
    <xs:annotation>
      <xs:documentation>To limit actions to specific hosts. The list here should be a sub list of the hosts in the Control section.</xs:documentation>
    </xs:annotation>
    <xs:element ref="Host"/>
    <xs:element ref="Hosts"/>
  </xs:choice>
</xs:group>