Monkey patch to support #symbolize_keys!
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# File 'lib/aliyun/oss/util.rb', line 85 def symbolize_keys! self.keys.each { |k| self[k.to_sym] = self.delete(k) } self.values.each { |v| v.symbolize_keys! if v.is_a?(Hash) or v.is_a?(Array) } end