code: def set_amino_acid(self, aa):
          
          aa = aa.upper()  # make sure it is upper case
          aa = aa[2:] if aa.startswith('P.') else aa  # strip "p."
          self.__set_mutation_status()  # set flags detailing the type of mutation
          self.__parse_hgvs_syntax(aa)
docs: Set amino acid change and position.