Public Function BeginGetLayers( _
   ByVal SymbolOutputOptions As ServerSymbolOutputOptions, _
   ByVal callback As AsyncCallback, _
   ByVal asyncState As Object _
) As IAsyncResult

Dim instance As FeatureServerProxy
Dim SymbolOutputOptions As ServerSymbolOutputOptions
Dim callback As AsyncCallback
Dim asyncState As Object
Dim value As IAsyncResult
 
value = instance.BeginGetLayers(SymbolOutputOptions, callback, asyncState)

public IAsyncResult BeginGetLayers( 
   ServerSymbolOutputOptions SymbolOutputOptions,
   AsyncCallback callback,
   object asyncState
)