Create acceptedSender

POST https://graph.microsoft.com/beta/groups/{id}/acceptedSenders/$ref
Content-type: application/json
Content-length: 30

{
  "@odata.id":"https://graph.microsoft.com/beta/users/alexd@contoso.com"
}

const options = {
	authProvider,
};

const client = Client.init(options);

const directoryObject = {
  @odata.id:"https://graph.microsoft.com/beta/users/alexd@contoso.com"
};

let res = await client.api('/groups/{id}/acceptedSenders/$ref')
	.version('beta')
	.post(directoryObject);

MSHTTPClient *httpClient = [MSClientFactory createHTTPClientWithAuthenticationProvider:authenticationProvider];

NSString *MSGraphBaseURL = @"https://graph.microsoft.com/beta/";
NSMutableURLRequest *urlRequest = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:[MSGraphBaseURL stringByAppendingString:@"/groups/{id}/acceptedSenders/$ref"]]];
[urlRequest setHTTPMethod:@"POST"];
[urlRequest setValue:@"application/json" forHTTPHeaderField:@"Content-Type"];

MSGraphDirectoryObject *directoryObject = [[MSGraphDirectoryObject alloc] init];

NSError *error;
NSData *directoryObjectData = [directoryObject getSerializedDataWithError:&error];
[urlRequest setHTTPBody:directoryObjectData];

MSURLSessionDataTask *meDataTask = [httpClient dataTaskWithRequest:urlRequest 
	completionHandler: ^(NSData *data, NSURLResponse *response, NSError *nserror) {

		//Request Completed

}];

[meDataTask execute];

GraphServiceClient graphClient = new GraphServiceClient( authProvider );

var directoryObject = new DirectoryObject
{
	Id = "alexd@contoso.com"
};

await graphClient.Groups["{id}"].AcceptedSenders.References
	.Request()
	.AddAsync(directoryObject);

IGraphServiceClient graphClient = GraphServiceClient.builder().authenticationProvider( authProvider ).buildClient();

DirectoryObject directoryObject = new DirectoryObject();
directoryObject.id = "alexd@contoso.com";

graphClient.groups("{id}").acceptedSenders().references()
	.buildRequest()
	.post(directoryObject);