AppStoreOAuthGetAccessTokenAsync 方法

public static Task<OAuthAccessTokenResult> GetAccessTokenAsync(
	string clientId,
	string clientSecret,
	string code,
	string grantType = "authorization_code"
)

Public Shared Function GetAccessTokenAsync ( 
	clientId As String,
	clientSecret As String,
	code As String,
	Optional grantType As String = "authorization_code"
) As Task(Of OAuthAccessTokenResult)