ISpaceIterator<T> GetSpaceIterator<T>(
	IQuery<T> query,
	IteratorScope iteratorScope,
	int bufferSize,
	long leaseTime
)

Function GetSpaceIterator(Of T) ( _
	query As IQuery(Of T), _
	iteratorScope As IteratorScope, _
	bufferSize As Integer, _
	leaseTime As Long _
) As ISpaceIterator(Of T)

generic<typename T>
ISpaceIterator<T>^ GetSpaceIterator(
	IQuery<T>^ query, 
	IteratorScope iteratorScope, 
	int bufferSize, 
	long long leaseTime
)

J# supports the use of generic APIs, but not the declaration of new ones.