typedef int PK_check_geom_t;
This data type is used to select the level of geometry checking required.
It has five values:
PK_check_geom_no_c don't do geometry validity checks
PK_check_geom_basic_c check for invalid or degenerate geometry
PK_check_geom_lazy_c check for invalid, degenerate or
self-intersecting geometry
PK_check_geom_full_c as for PK_check_geom_lazy_c but ignore
the results of pre-V5 checks
PK_check_geom_yes_c do all geometry checks regardless of
previous checks or interface parameters
