public Results required_by (Bitfield filters, string package_ids, bool recursive, Cancellable? cancellable, ProgressCallback progress_callback) throws Error
Get the packages that require this one, i.e. parent.
Warning: this function is synchronous, and may block. Do not use it in GUI applications.
a valid Client instance
a null terminated array of package_id structures such as "hal;0.0.1;i386;fedora"
If we should search recursively for requires
a Cancellable or
the function to run when the progress changes
data to pass to
a Results object, or