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| MribLookup (MribLookup *parent) | MribLookup | 
Constructor for a given parent entry.
Parameters:
| parent | the parent entry. | 
| ~MribLookup () | ~MribLookup | 
| Mrib * mrib () | mrib | 
[const]
Get the corresponding Mrib entry.
Returns: the corresponding Mrib entry if exists, otherwise NULL.
| MribLookup * get_next () | get_next | 
[const]
Get the next MribLookup entry.
The ordering of the entries is "depth-first search", where the nodes are returned in the following order: (a) the parent node; (b) the left-child node and all nodes within its subtree; (c) the right-child node and all nodes within its subtree;
Returns: the next MribLookup entry if exists, otherwise NULL.