public virtual sbyte* getPartitionName(
	EntryEvent* opDetails,
	[T:gemfire.SharedPtr<gemfire::CacheableHashSet>]* targetPartitions
)

Visual Basic does not support APIs that consume or return unsafe types.

public:
virtual signed char* getPartitionName(
	EntryEvent* opDetails, 
	[T:gemfire.SharedPtr<gemfire::CacheableHashSet>]* targetPartitions
)

F# does not support APIs that consume or return unsafe types.