Nullable<int> GetUserRating(
	Guid parentEntityId,
	int parentEntityType,
	Guid userId
)

Function GetUserRating ( 
	parentEntityId As Guid,
	parentEntityType As Integer,
	userId As Guid
) As Nullable(Of Integer)

Nullable<int> GetUserRating(
	Guid parentEntityId, 
	int parentEntityType, 
	Guid userId
)

abstract GetUserRating : 
        parentEntityId : Guid * 
        parentEntityType : int * 
        userId : Guid -> Nullable<int>