Split a Bulk Coretime Region into two wholly-overlapping Regions with complementary
interlace masks which together make up the original Region's interlace mask.
origin: Must be a Signed origin of the account which owns the Region region_id.
region_id: The Region which should become two interlaced Regions of incomplete
regularity.
pivot: The interlace mask of one of the two new regions (the other is its partial
complement).
Split a Bulk Coretime Region into two wholly-overlapping Regions with complementary interlace masks which together make up the original Region's interlace mask.
origin: Must be a Signed origin of the account which owns the Regionregion_id.region_id: The Region which should become two interlaced Regions of incomplete regularity.pivot: The interlace mask of one of the two new regions (the other is its partial complement).