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The Macros module is a fictitious module used to document macros
Crystal:: Macros Overview The Macros module is a fictitious module used to document macros and macro methods. You can invoke a fixed subset of methods on AST nodes at compile-time.
By default, the output is tried to be formatted using Crystal's formatter, but you can disable this by passing false to this method. A compile time error is raised if the type/constant does not actually exist, or if a required generic argument was not provided. NOTE the compiler is allowed to cache the executable generated for filename and only recompile it if any of the files it depends on changes (their modified time).
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