gml:AbstractTopologyType 

This abstract type supplies the root or base type for all topological elements including primitives and complexes. It inherits AbstractGMLType and hence can be identified using the gml:id attribute.

Complex Type Information

Model

gml:metaDataProperty* , gml:description{0,1} , gml:descriptionReference{0,1} , gml:identifier{0,1} , gml:name*
Children: gml:description, gml:descriptionReference, gml:identifier, gml:metaDataProperty, gml:name

Attributes

QName Type Fixed Default Use Inheritable Annotation
gml:id ID required 
The attribute gml:id supports provision of a handle for the XML element representing a GML Object. Its use is mandatory for all GML objects. It is of XML type ID, so is constrained to be unique in the XML document within which it occurs.

Used By

Element gml:AbstractTopology
Complex Types gml:AbstractTopoPrimitiveType, gml:TopoComplexType, gml:TopoCurveType, gml:TopoPointType, gml:TopoSurfaceType, gml:TopoVolumeType

Source 

<complexType name="AbstractTopologyType" abstract="true">
  <annotation>
    <documentation>This abstract type supplies the root or base type for all topological elements including primitives and complexes. It inherits AbstractGMLType and hence can be identified using the gml:id attribute.</documentation>
  </annotation>
  <complexContent>
    <extension base="gml:AbstractGMLType"/>
  </complexContent>
</complexType>