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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 get_contents_entry(node):
 """Fetch the contents of the entry. Returns the exact binary contents of the file."""

    try:
        node = node.disambiguate(must_exist=1)
    except SCons.Errors.UserError:
        # There was nothing on disk with which to disambiguate
        # this entry.  Leave it as an Entry, but return a null
        # string so calls to get_contents() in emitters and the
        # like (e.g. in qt.py) don't have to disambiguate by hand
        # or catch the exception.
        return ''
    else:
        return _get_contents_map[node._func_get_contents](node)