Function SCIPinsertDatatreeTree 

pub unsafe extern "C" fn SCIPinsertDatatreeTree(
    scip: *mut SCIP,
    datatree: *mut SCIP_DATATREE,
    name: *const c_char,
    value: *mut SCIP_DATATREE,
) -> SCIP_RETCODE

inserts a data tree value into a SCIP_DATATREE object

The data tree assumes ownership of value.