Union of the XML Schema integer type and the GML Nulltype. An element which uses this type may have content which is either an integer or a value from Nulltype
<simpleType name="integerOrNull"><annotation><documentation>Union of the XML Schema integer type and the GML Nulltype. An element which uses this type may have content which is either an integer or a value from Nulltype</documentation></annotation><union memberTypes="gml:NullEnumeration integer anyURI"/></simpleType>