code: def get_schema(self, schema_id):
          
          schema_specs = get_schema_specs(schema_id, self)
  
          if schema_specs is None:
              raise KeyError(
                  'Specified schema_id \'{0}\' not found'.format(schema_id))
  
          for schema in (
                  parameter.get('schema') for parameter in
                  schema_specs['parameters']):
              if schema is not None and schema.get('id').lower() == schema_id:
                  return schema
docs: This method finds a schema known to Flasgger and returns it.
  
          :raise KeyError: when the specified :param schema_id: is not
          found by Flasgger
  
          :param schema_id: the id of the desired schema