public static SIPMessage AddAdditionalHeaders(
	this SIPMessage msg,
	IEnumerable<SIPHeader> additionalHeaders
)

<ExtensionAttribute>
Public Shared Function AddAdditionalHeaders ( 
	msg As SIPMessage,
	additionalHeaders As IEnumerable(Of SIPHeader)
) As SIPMessage

public:
[ExtensionAttribute]
static SIPMessage^ AddAdditionalHeaders(
	SIPMessage^ msg, 
	IEnumerable<SIPHeader^>^ additionalHeaders
)

[<ExtensionAttribute>]
static member AddAdditionalHeaders : 
        msg : SIPMessage * 
        additionalHeaders : IEnumerable<SIPHeader> -> SIPMessage