group	The group tag is used to denote the interface to a hardware group.

id                  	Specifies an unique identifier for this element.
implementation      	Specifies the implementation class name.
service             	Specifies the Open Services Gateway Initiative (OSGi) service interface name.
bundle              	Specifies the Open Services Gateway Initiative (OSGi) bundle name.
bundleid            	Specifies the Open Services Gateway Initiative (OSGi) bundle symbolic id.
lazy                	Specifies if the generated code should be lazy.
abstract            	Specifies an abstract implementation class.
createmethod        	Specifies create method(s).
superclass          	Specifies the implementation superclass name.
idref               	Specifies a reference to the element with the matching <a href=&quot;"idAttribute.

<description>         	Description of the group.
<history>             	Specifies the group history.
<deprecated>          	Specifies that the contents of this element should be marked as deprecated.
<spec>                	Hardware specification documentation for this group.
<specreference>       	Specification reference for this group.
<commandreceived>     	Specifies if a command message can be received from the group.
<key>                 	Specifies an optional key value.
<command>             	Specifies a command that is supported by this group.
<commands>            	Specifies a command group.
<group>               	Specifies a group.
<measurement>         	Specifies a measurement supported by this group.
<signal>              	Specifies a signal supported by this group.
<exportservice>       	Specifies the name of the Open Services Gateway initiative (OSGi) group to be exported.
<import>              	Specifies the name of the package of be imported.
