I have three Pydantic classes like so:

class Meta(BaseModel):
     """Meta data attached to parent objects"""
    description: str = Field(description="description of the parent object")
    type: str = Field(description="type of the parent object")  

class Goal(BaseModel):
    """Customer goals"""
    _id: str
    meta: Meta_v2

class Insurance(BaseModel):
    """Customer insurance"""
    _id: str
    meta: Meta_v2

When I create an Insurance class, I want to automatically create a nested instance of Meta with:

description: "A customer insurance policy"
type: "insurance"

But when I create a Goal class, I want to automatically create a nested instance of Meta with:

description: "A customer goal"
type: "goal"

How do I do this pls?