# Written from the process, before any folder is opened.class ExpectedPiece(BaseModel):    """One row of what a case type demands, filed or not."""    role: str                  # the business word: "loss adjuster report"    min_count: int             # 0 when the piece is optional    max_count: int | None      # None when any number of them is fine    required_when: str | None  # a condition on the case's own fields    blocks_payment: bool       # can the case move on while this is absentPROPERTY_DAMAGE_CLAIM = [    ExpectedPiece(role="claim form", min_count=1, max_count=1,                  required_when=None, blocks_payment=True),    ExpectedPiece(role="fire brigade report", min_count=1, max_count=1,                  required_when="cause_of_loss == 'fire'",                  blocks_payment=True),    ExpectedPiece(role="repair invoice", min_count=1, max_count=None,                  required_when="accepted_quotes >= 1",                  blocks_payment=True),    ExpectedPiece(role="correspondence", min_count=0, max_count=None,                  required_when=None, blocks_payment=False),]