Function SCIPgetBestboundNode 

pub unsafe extern "C" fn SCIPgetBestboundNode(
    scip: *mut SCIP,
) -> *mut SCIP_NODE

gets the node with smallest lower bound from the tree (child, sibling, or leaf)

@return the node with smallest lower bound from the tree (child, sibling, or leaf)

@pre This method can be called if @p scip is in one of the following stages: - \ref SCIP_STAGE_SOLVING