def copy(self):
        '''Create a copy of the current instance.

        :returns: A safely editable copy of the current sequence.
        :rtype: coral.Peptide

        '''
        return type(self)(str(self._sequence), features=self.features,
                          run_checks=False)
Create a copy of the current instance.

        :returns: A safely editable copy of the current sequence.
        :rtype: coral.Peptide