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.<br/>Applying the pattern to define an application schema specific property type allows to restrict<br/>- the inline object to specified object types, <br/>- the encoding to "by-reference only" (see 7.2.3.7),<br/>- the encoding to "inline only" (see 7.2.3.8).<br/>