check_patch_data
check_patch_data(
patch: PatchMeta ,
)-> ‘PatchMetaType’
Check that data are in reach, else raise.
A PatchMeta describes data it does not hold, so an operation which computes data cannot run on one. A method is out of reach there, being bound to Patch, but a bare call is not: this is what turns dc.proc.pass_filter(meta) into a clear error rather than an AttributeError from somewhere inside the operation.
Raises
PatchDataError If given a patch’s metadata rather than the patch.