Database handle for the object. It is of XML type ID, so is constrained to beunique in the XML document within which it occurs. An external identifier for the object inthe form of a URI may be constructed using standard XML and XPointer methods. This is doneby concatenating the URI for the document, a fragment separator, and the value of the idattribute.
Source
<complexType name="GroutPlantType"><annotation><documentation>Extends property type to include properties for a grout plant - a combined equipment type containing a grout mixer and a grout pump.</documentation></annotation><complexContent><extension base="diggs:AbstractEquipmentType"><sequence><element minOccurs="0" name="mixer" type="diggs:GroutMixerPropertyType"><annotation><documentation>The mixer property.</documentation></annotation></element><element minOccurs="0" name="pump" type="diggs:GroutPumpPropertyType"><annotation><documentation>The pump property.</documentation></annotation></element></sequence></extension></complexContent></complexType>