Function SCIPincludeComprBasic 

pub unsafe extern "C" fn SCIPincludeComprBasic(
    scip: *mut SCIP,
    compr: *mut *mut SCIP_COMPR,
    name: *const c_char,
    desc: *const c_char,
    priority: c_int,
    minnnodes: c_int,
    comprexec: Option<unsafe extern "C" fn(scip: *mut SCIP, compr: *mut SCIP_COMPR, result: *mut SCIP_RESULT) -> SCIP_RETCODE>,
    comprdata: *mut SCIP_COMPRDATA,
) -> SCIP_RETCODE

creates a tree compression and includes it in SCIP with its most fundamental callbacks. All non-fundamental (or optional) callbacks as, e. g., init and exit callbacks, will be set to NULL. Optional callbacks can be set via specific setter functions, see SCIPsetComprCopy(), SCIPsetComprFree(), SCIPsetComprInit(), SCIPsetComprExit(), SCIPsetComprInitsol(), and SCIPsetComprExitsol()

@note if you want to set all callbacks with a single method call, consider using SCIPincludeCompr() instead