This abstract element acts as the head of the substitution group for temporal complexes. Temporal complex is an aggregation of temporal primitives as its components, represents a temporal geometric complex and a temporal topology complex. N.B. Temporal geometric complex is not defined in this schema.
Database handle for the object. It is of XML type ID, so is constrained to be unique in the XML document within which it occurs. An external identifier for the object in the form of a URI may be constructed using standard XML and XPointer methods. This is done by concatenating the URI for the document, a fragment separator, and the value of the id attribute.
Source
<element name="_TimeComplex" type="gml:AbstractTimeComplexType" abstract="true" substitutionGroup="gml:_TimeObject"><annotation><documentation xml:lang="en">This abstract element acts as the head of the substitution group for temporal complexes. Temporal complex is an aggregation of temporal primitives as its components, represents a temporal geometric complex and a temporal topology complex. N.B. Temporal geometric complex is not defined in this schema.</documentation></annotation></element>