code: def clone_schema(self, base_schema_name, new_schema_name):
          
          connection.set_schema_to_public()
          cursor = connection.cursor()
  
          # check if the clone_schema function already exists in the db
          try:
              cursor.execute("SELECT 'clone_schema'::regproc")
          except ProgrammingError:
              self._create_clone_schema_function()
              transaction.commit()
  
          sql = 'SELECT clone_schema(%(base_schema)s, %(new_schema)s, TRUE)'
          cursor.execute(
              sql,
              {'base_schema': base_schema_name, 'new_schema': new_schema_name}
          )
          cursor.close()
docs: Creates a new schema `new_schema_name` as a clone of an existing schema
          `old_schema_name`.