Material MaterialTicker Bases: BaseModel MaterialId class-attribute instance-attribute 1MaterialId = Field(min_length=32) CategoryName instance-attribute 1CategoryName CategoryId class-attribute instance-attribute 1CategoryId = Field(min_length=32) Name instance-attribute 1Name Ticker instance-attribute 1Ticker Weight instance-attribute 1Weight Volume instance-attribute 1Volume UserNameSubmitted instance-attribute 1UserNameSubmitted Timestamp instance-attribute 1Timestamp MaterialTickerList Bases: RootModel root instance-attribute 1root