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Ensures that the directory exists. If the directory structure does not exist, it is created. Like mkdir -p. Requires the --allow-read and --allow-write flag.

Test whether or not the given path exists by checking with the file system.

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Take a set of command line arguments, optionally with a set of options, and return an object representing the flags found in the passed arguments.

Parses content as single YAML document.

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Serializes object as a YAML document.

Walks the file tree rooted at root, yielding each file or directory in the tree filtered according to the given options.