code: def get_prototypes(self, structure):
          
  
          tags = self._match_single_prototype(structure)
  
          if len(tags) == 0:
              return None
          else:
              return tags
docs: Get prototype(s) structures for a given
          input structure. If you use this method in
          your work, please cite the appropriate
          AFLOW publication:
  
          Mehl, M. J., Hicks, D., Toher, C., Levy, O.,
          Hanson, R. M., Hart, G., & Curtarolo, S. (2017).
          The AFLOW library of crystallographic prototypes: part 1.
          Computational Materials Science, 136, S1-S828.
          http://doi.org/10.1016/j.commatsci.2017.01.017
  
          Args:
              structure: structure to match
  
          Returns (list): A list of dicts with keys
          'snl' for the matched prototype and 'tags',
          a dict of tags ('mineral', 'strukturbericht'
          and 'aflow') of that prototype. This should
          be a list containing just a single entry,
          but it is possible a material can match
          multiple prototypes.