class_docstr: Data provider for Postgres.
class_docstr_tok: ["Data","provider","for","Postgres","."]
code: def can_write_experiment(self, key=None, user=None):
      raise NotImplementedError()
  
label_desc: Use image node_id 17 for calling the PostgresProvider obj's underlying member method code with example usage: obj.can_write_experiment(key, user) without return types