def find min(self)"""return (key,valuepair with minimum key (or none if empty""if self is empty)return none elsep self firstreturn ( key) value)def find ge(selfk)"""return (key,valuepair with least key greater than or equal to return none if there does not exist such key ""if self is empty)return none elsemay not find exact match self find position(kif keykp' key is too small self after(preturn ( key) value)if is not none else none def find range(selfstartstop)"""iterate all (key,valuepairs such that start <key stop if start is noneiteration begins with minimum key of map if stop is noneiteration continues through the maximum key of map ""if not self is empty)if start is nonep self firstelsewe initialize with logic similar to find ge self find position(startif keystartp self after(pwhile is not none and (stop is none or keystop)yield ( key) value) self after(pcode fragment some of the sorted map operations for the treemap class