Applying this pattern shall restrict the multiplicity of objects in a property element using this content model to exactly one. An instance of this type shall contain an element representing an object, or serve as a pointer to a remote object.Applying the pattern to define an application schema specific property type allows to restrict- the inline object to specified object types, - the encoding to "by-reference only" (see 7.2.3.7),- the encoding to "inline only" (see 7.2.3.8).
<element name="abstractAssociationRole" type="gml:AssociationRoleType" abstract="true"><annotation><documentation>Applying this pattern shall restrict the multiplicity of objects in a property element using this content model to exactly one. An instance of this type shall contain an element representing an object, or serve as a pointer to a remote object. Applying the pattern to define an application schema specific property type allows to restrict - the inline object to specified object types, - the encoding to "by-reference only" (see 7.2.3.7), - the encoding to "inline only" (see 7.2.3.8).</documentation></annotation></element>