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remove

container.mutable_tree_map.remove

(key KEY)
 => 
option VAL
[Redefinition of  container.Mutable_Map.remove]
remove the mapping from k to some value from this map

returns the value that k previously mapped to, or nil if
no mapping was actually removed
0.095dev (2025-08-15 12:02:22 GIT hash 301b5b75e77076d091b38f555473f9f0e31e5b5c built by fridi@fzen)