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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 has_header_line(self, key, id_):
 """Return whether there is a header line with the given ID of the type given by ``key`` :param key: The VCF header key/line type. :param id_: The ID value to compare fore :return: ``True`` if there is a header line starting with ``##${key}=`` in the VCF file having the mapping entry ``ID`` set to ``id_``. """

        if key not in self._indices:
            return False
        else:
            return id_ in self._indices[key]