To access an object_bag using the Sui SDK, you can follow these steps:

1. Call suix_getDynamicFields: Use the suix_getDynamicFields function from the RPC API or find a similar function in the TypeScript (TS) SDK. This function returns a structure with a data field, which is an array of DynamicFieldInfo objects, specific to the object ID you pass in.
2. Iterate Through the DynamicFieldInfo Array: For each element in the DynamicFieldInfo array, examine the type field. If the type field has a value of DynamicObject, you can extract the name field from the DynamicFieldInfoobject. This name value corresponds to the field containing the object_bag.
3. Use getDynamicFieldObject: Utilize the getDynamicFieldObject function, passing the extracted name as a parameter. This function allows you to retrieve the object_bag from the specified field. Please note that while I don't have the explicit TypeScript code, you can easily check the TypeScript source code to understand the exact function names, parameters, and usage within the Sui SDK. By following these steps, you can effectively access the object_bag using the Sui SDK. If you encounter any specific issues or have further questions, feel free to ask for additional assistance.

The getObject function is used to retrieve an object by its ID. If the object does not exist or the ID is incorrect, it will return an error.

On the other hand, the getDynamicFieldObject function is used to retrieve dynamic field object information for a specified object docs.zan.top.

If the object you're trying to retrieve is an object_bag and it has dynamic fields, you might need to use the getDynamicFieldObject function. The name parameter should be the name of the dynamic field you want to retrieve.

Here's a basic example of how you might use getDynamicFieldObject:

et dynamicFieldName = 'yourDynamicFieldName';
let objectId = 'yourObjectId';

suiSDK.getDynamicFieldObject(objectId, dynamicFieldName)
 .then(dynamicFieldObject => {
   console.log(dynamicFieldObject);
 })
 .catch(error => {
   console.error('Error retrieving dynamic field object:', error);
 });

In this example, replace yourDynamicFieldName with the name of the dynamic field you want to retrieve, and replace yourObjectId with the ID of the object you're trying to retrieve.

However, if the object does not have any dynamic fields, or if the object does not exist, you will still encounter an error. In that case, you should double-check the object ID and make sure the object has been created before you try to retrieve it