Flush buffers to disk
H5F.flush(object_id,scope) causes all buffers associated with a file to
be immediately flushed to disk without removing the data from the cache.
object_id can be any object associated with the file, including
the file itself, a dataset, a group, an attribute, or a named data type.
scope specifies whether the scope of the flushing action is
global or local. Specify
scope as one of these character vectors or