Function parseContractPosition
- parseContractPosition(contractPosition, collateralToken, indexToken, isLong, fundingRate): PositionHlp
 Parameters
- contractPosition: [BigNumber, BigNumber, BigNumber, BigNumber, BigNumber, BigNumber, boolean, BigNumber]
 - collateralToken: string
 - indexToken: string
 - isLong: boolean
 - fundingRate: TokenFundingRate
 
Returns PositionHlp