Represents a data mapping between two elements.<q ref="core.gml:Link">Link</q>(c) SAP AG 2003-2006. All rights reserved.<q ref="core.gml:NavigationLink">NavigationLink</q> | <q ref="core.gml:DataLink">DataLink</q> Gets the string representing the event carried by this link (optional). Gets the string representing the event trigged at the target of this link (optional). If no value is specified, then the event at the target is equal to the event at the source. Add one mapping object between a source and a destination field.Full Id of source field (in the form <code>unitId.elemId)</code>Full Id of target field (in the form <code>unitId.elemId)</code>source field.target field. Gets the array of mapping objects from source field to target field.