class Sorbet::Private::HiddenMethodFinder

def serialize_includes(source, rbi, klass, is_singleton, source_symbols, rbi_symbols)
[]
_mixins = source.map {|id| source_symbols[id]}
xins = rbi.map {|id| rbi_symbols[id]}
xins.each do |rbi_mixin|
source_mixins.include?(rbi_mixin)
yword = is_singleton ? "extend" : "include"
t << "  #{keyword} ::#{rbi_mixin}"