gml:Transformation is a concrete object element derived from gml:GeneralTransformation (13.6.2.13).This concrete object can be used for all operation methods, without using a GML Application Schema that defines operation-method-specialized element names and contents, especially for methods with only one Transformation instance.The parameterValue elements are an unordered list of composition associations to the set of parameter values used by this conversion operation.
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.
Source
<element name="Transformation" type="gml:TransformationType" substitutionGroup="gml:AbstractGeneralTransformation"><annotation><documentation>gml:Transformation is a concrete object element derived from gml:GeneralTransformation (13.6.2.13). This concrete object can be used for all operation methods, without using a GML Application Schema that defines operation-method-specialized element names and contents, especially for methods with only one Transformation instance. The parameterValue elements are an unordered list of composition associations to the set of parameter values used by this conversion operation.</documentation></annotation></element>