code: public String generateFasta(String notation)
  			throws FastaFormatException, ValidationException, MonomerLoadingException, ChemistryException {
  		String result = FastaFormat.generateFasta(validate(notation));
  		setMonomerFactoryToDefault(notation);
  		return result;
  	}
docs: method to generate FASTA-Formats for all rna and peptide sequences from
  an HELM input
  
  @param notation
  HELM input
  @return FASTA containing all rna and peptide sequences
  @throws ValidationException
  if the HELM input is not valid
  @throws FastaFormatException
  if the FASTA-sequences can not be built
  @throws MonomerLoadingException
  if the MonomerFactory can not be loaded
  @throws ChemistryException
  if the Chemistry Engine can not be initialized