A MappingLoop supports an iteration of mapping invocations.
syntax: 
				for name : type in expression {...}
			
conformsTo 
				
					MappingStatement
				, 
				
					ObservableStatement
				
			
Attributes
				
ownedIterators : OrderedSet(qvtimperative::LoopVariable)[*|1]
			
The iterator loop variable.
				
ownedMappingStatements : OrderedSet(qvtimperative::MappingStatement)[*|1]
			
The statements to be iterated, typically a single MappingCall.
Associations
				
ownedExpression : OCLExpression[1]
			
The expression whose values provide the iterator values.