anchor.diff:    contractInstance(networkId: String!, name: String!): ContractInstance
   }
   
  +
   type ContractInstance {
     address: Address!
     network: Network!
  -  transactionHash: TransactionHash!
  -  constructorArgs: [Value]!
  -  contractType: ContractType!
  -  callBytecode: Bytecode!
  -  linkValues: [LinkValue]!
  +  callBytecode: Bytecode
  +  contractType: ContractType
  +  transactionHash: TransactionHash
  +  constructorArgs: [Value]
  +  linkValues: [LinkValue]
   }
   
   type ContractType {
  -  name: String!
     abi: ABI!
  +  name: String
     compilation: Compilation
     createBytecode: Bytecode
   }
  
positive.code: }
  
  type LinkReference {
    offsets: [ByteOffset]!
    length: Int!
  }
  
  
negative.code:   bytes: Bytes!
    sourceMap: String,
    instructions: [Instruction!],
    linkReferences: [LinkReference]
  }
  
  type Instruction {
  