code: def register_common_type_filters(self):
          
          self.register_filter('type2enum', type2enum)
          self.register_filter('cysparse_type_to_numpy_c_type', cysparse_type_to_numpy_c_type)
          self.register_filter('cysparse_type_to_numpy_type', cysparse_type_to_numpy_type)
          self.register_filter('cysparse_type_to_numpy_enum_type', cysparse_type_to_numpy_enum_type)
          self.register_filter('cysparse_type_to_real_sum_cysparse_type', cysparse_type_to_real_sum_cysparse_type)
          self.register_filter('cysparse_real_type_from_real_cysparse_complex_type', cysparse_real_type_from_real_cysparse_complex_type)
docs: Add/register common type filters for the :program:`CySparse` project.