Allias param for peewee.ModelSelect.join about peewee HOT 7 CLOSED

>>> query = Tweet.select(Tweet.content, User.username).join(User, attr='author')
>>> for tweet in query:
...     print(tweet.author.username, '->', tweet.content)
...
huey -> meow
huey -> hiss
huey -> purr
mickey -> woof
mickey -> whine

class Transaction(Model):
    one_customer_type = ForeignKeyField(
        model=CustomerType, null=True,
    )
    another_customer_type = ForeignKeyField(
        model=CustomerType, null=True,
    )

class CustomerType(Model):
    name = CharField(max_length=16, default='', null=True)

Transaction.select(
     peewee.SQL('t2.name').alias('one_ct'),
     peewee.SQL('t3.name').alias('another_ct'),
).join(
    CustomerType,
    on=CustomerType.id == Transaction.one_customer_type,
    alias='t2'
).join(
    CustomerType,
    on=CustomerType.id == Transaction.another_customer_type,
    alias='t3'
)

class Transaction(Model):
    one_customer_type = ForeignKeyField(
        model=CustomerType, null=True,
    )
    another_customer_type = ForeignKeyField(
        model=CustomerType, null=True,
    )

class CustomerType(Model):
    name = CharField(max_length=16, default='', null=True)

first_ct = CustomerType.alias('first_ct')
another_one_ct = CustomerType.alias('another_one_ct')


Transaction.select(
     one_ct.name.alias('one_ct'),
     another_one_ct.name.alias('another_ct'),
).join(
    first_ct,
    on=first_ct.id == Transaction.one_customer_type,
).join(
    another_one_ct,
    on=another_one_ct.id == Transaction.another_customer_type,
)