To create a collection of GML features, a property type shall be derived by extension from gml:AbstractFeatureMemberType.By default, this abstract property type does not imply any ownership of the features in the collection. The owns attribute of gml:OwnershipAttributeGroup may be used on a property element instance to assert ownership of a feature in the collection. A collection shall not own a feature already owned by another object.
<complexType name="AbstractFeatureMemberType" abstract="true"><annotation><documentation>To create a collection of GML features, a property type shall be derived by extension from gml:AbstractFeatureMemberType. By default, this abstract property type does not imply any ownership of the features in the collection. The owns attribute of gml:OwnershipAttributeGroup may be used on a property element instance to assert ownership of a feature in the collection. A collection shall not own a feature already owned by another object.</documentation></annotation><sequence/><attributeGroup ref="gml:OwnershipAttributeGroup"/></complexType>