Public Overloads Sub GetEntityTypesAsync( _
   ByVal dataSourceName As String, _
   ByVal userState As Object _
) 

Dim instance As CommonService
Dim dataSourceName As String
Dim userState As Object
 
instance.GetEntityTypesAsync(dataSourceName, userState)

public void GetEntityTypesAsync( 
   string dataSourceName,
   object userState
)