code: def _get_imagesave_wildcards(self):
          'return the wildcard string for the filesave dialog'
          default_filetype = self.get_default_filetype()
          filetypes = self.get_supported_filetypes_grouped()
          sorted_filetypes = filetypes.items()
          sorted_filetypes.sort()
          wildcards = []
          extensions = []
          filter_index = 0
          for i, (name, exts) in enumerate(sorted_filetypes):
              ext_list = ';'.join(['*.%s' % ext for ext in exts])
              extensions.append(exts[0])
              wildcard = '%s (%s)|%s' % (name, ext_list, ext_list)
              if default_filetype in exts:
                  filter_index = i
              wildcards.append(wildcard)
          wildcards = '|'.join(wildcards)
          return wildcards, extensions, filter_indef _get_imagesave_wildcards(self):
          'return the wildcard string for the filesave dialog'
          default_filetype = self.get_default_filetype()
          filetypes = self.get_supported_filetypes_grouped()
          sorted_filetypes = filetypes.items()
          sorted_filetypes.sort()
          wildcards = []
          extensions = []
          filter_index = 0
          for i, (name, exts) in enumerate(sorted_filetypes):
              ext_list = ';'.join(['*.%s' % ext for ext in exts])
              extensions.append(exts[0])
              wildcard = '%s (%s)|%s' % (name, ext_list, ext_list)
              if default_filetype in exts:
                  filter_index = i
              wildcards.append(wildcard)
          wildcards = '|'.join(wildcards)
          return wildcards, extensions, filter_index
docs: return the wildcard string for the filesave dialog