Better error message when "prop_name" is not specified for a JSON column

[zain]

from gino.dialects.asyncpg import JSONB
from myproject.main import db

class MyModel(db.Model):
    __tablename__ = "models"

    id = db.Column(db.BigInteger(), primary_key=True)
    profile_json = db.Column(JSONB(), nullable=False, server_default="{}")

    profile = db.JSONProperty()

This causes the error:

...
    exp = self.make_expression(getattr(owner, self.prop_name)[self.name])
  [Previous line repeated 312 more times]
RecursionError: maximum recursion depth exceeded while calling a Python object

The fix is to add prop_name='profile_json' to the JSONProperty() declaration, but without docs and an error message, it is hard to know that.