Copy copies src to dest, doesn't matter if src is a directory or a file.

DefaultCopyOptions provides default options, which would be modified by usage-side.

DefaultFileCopy file copy that can be called from external.

Deep creates hard-copy of contents.

Shallow creates new symlink to the dest of symlink.

Skip does nothing with symlink.

Options specifies optional actions on copying.

Results specifies results of the copy.

FileHandlerFunc type to define a function for carrying out a file processing for copying or processing as a template.

SymlinkAction represents what to do on symlink.