def ref_string_matches_ref_sequence(self, ref_sequence):
<EOL>if self.POS < <NUM_LIT:0>:<EOL><INDENT>return False<EOL><DEDENT>end_pos = self.ref_end_pos()<EOL>if end_pos >= len(ref_sequence):<EOL><INDENT>return False<EOL><DEDENT>return self.REF == ref_sequence[self.POS:end_pos + <NUM_LIT:1>]<EOL>
Returns true iff the REF string in the record agrees with
        the given ref_sequence