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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def register_vcs_handler(vcs, method):
 # tyoe: (str, str) -> typing.Callable # decorator """Decorator to mark a method as the handler for a particular VCS."""

    def decorate(f):
        """Store f in HANDLERS[vcs][method]."""
        if vcs not in HANDLERS:
            HANDLERS[vcs] = {}
        HANDLERS[vcs][method] = f
        return f
    return decorate