Expand description
Gets or creates a new shared YArray data type instance as a root-level type of a given document.
This structure can later be accessed using its name, which must be a null-terminated UTF-8
compatible string.
Use [yarray_destroy] in order to release pointer returned that way - keep in mind that this will
not remove YArray instance from the document itself (once created it’ll last for the entire
lifecycle of a document).