I have a question about how to modify a XData Block programmatically . Assume i have a impl.cls and there is a XData Block (like XData OpenAPI [ MimeType = application/json ]) in the impl.cls.  In other class, can i write a fucntion to modify the context in the XData Block? 

Ps: The document already show how to read the XData blcok, if i want to insert something into the block and save it back, how can i do this programmatically  (eg write a method and read the block from other class, write something into the block and save it ) ?? 

Thanks