rlp_new()
instantiates a newrlp
node.rlp_type()
checks if the node is arlp
node.rlp_<child>_get()
returns the<child>
node ofrlp
.rlp_<child>_set()
sets the new<child>
and deletes the old<child>
.rlp_<child>_rep()
sets the new<child>
and returns the old<child>
.