Function polkadot_runtime_parachains::origin::ensure_parachain

pub fn ensure_parachain<OuterOrigin>(
    o: OuterOrigin
) -> Result<ParaId, BadOrigin> where
    OuterOrigin: Into<Result<Origin, OuterOrigin>>, 

Ensure that the origin o represents a parachain. Returns Ok with the parachain ID that effected the extrinsic or an Err otherwise.