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class Formula def self.md5(val) stable.md5(val) end end class SoftwareSpec def md5(val) @resource.md5(val) end end class Resource def md5(val) @checksum = Checksum.new(:md5, val) end end class Pathname def md5 odie <<-EOS.undent MD5 support has been dropped for security reasons. Please switch this formula to SHA256. EOS end end