code: def get_singular_and_plural_dtype(self, dtype):
          
          dtype = dtype.strip()
          if dtype.endswith('s'):
              return dtype[:-1], dtype
          elif dtype == 'criteria':
              return 'table_column', 'criteria'
          elif dtype == 'contribution':
              return 'doi', 'contribution'
docs: Parameters
          ----------
          dtype : str
              MagIC table type (specimens, samples, contribution, etc.)
  
          Returns
          ---------
          name : str
             singular name for MagIC table ('specimen' for specimens table, etc.)
          dtype : str
             plural dtype for MagIC table ('specimens' for specimens table, etc.)