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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 _parse_trunk_groups(self, config):
 """ _parse_trunk_groups scans the provided configuration block and extracts all the vlan trunk groups. If no trunk groups are configured an empty List is returned as the vlaue. The return dict is intended to be merged into the response dict. Args: config (str):
 The vlan configuration block form the node's running configuration Returns: dict: resource dict attribute """

        values = TRUNK_GROUP_RE.findall(config)
        return dict(trunk_groups=values)