pattern = new ProductionPattern(Asn1Constants.SEQUENCE_TYPE,
"SequenceType");
alt = new ProductionPatternAlternative();
alt.addToken(Asn1Constants.SEQUENCE, 1, 1);
alt.addToken(Asn1Constants.LEFT_BRACE, 1, 1);
alt.addProduction(Asn1Constants.ELEMENT_TYPE_LIST, 0, 1);
alt.addToken(Asn1Constants.RIGHT_BRACE, 1, 1);
pattern.addAlternative(alt);
addPattern(pattern);
pattern = new ProductionPattern(Asn1Constants.SEQUENCE_OF_TYPE,