void AddPrecondition(
	bool matchExisting,
	string subject,
	string predicate,
	string object,
	string graph = "http://www.brightstardb.com/.well-known/model/wildcard",
	bool isLiteral = false,
	string datatype = null,
	string language = null
)

Sub AddPrecondition ( 
	matchExisting As Boolean,
	subject As String,
	predicate As String,
	object As String,
	Optional graph As String = "http://www.brightstardb.com/.well-known/model/wildcard",
	Optional isLiteral As Boolean = false,
	Optional datatype As String = Nothing,
	Optional language As String = Nothing
)

void AddPrecondition(
	bool matchExisting, 
	String^ subject, 
	String^ predicate, 
	String^ object, 
	String^ graph = L"http://www.brightstardb.com/.well-known/model/wildcard", 
	bool isLiteral = false, 
	String^ datatype = nullptr, 
	String^ language = nullptr
)

abstract AddPrecondition : 
        matchExisting : bool * 
        subject : string * 
        predicate : string * 
        object : string * 
        ?graph : string * 
        ?isLiteral : bool * 
        ?datatype : string * 
        ?language : string 
(* Defaults:
        let _graph = defaultArg graph "http://www.brightstardb.com/.well-known/model/wildcard"
        let _isLiteral = defaultArg isLiteral false
        let _datatype = defaultArg datatype null
        let _language = defaultArg language null
*)
-> unit