code: func (s *SupportImpl) CheckACL(signedProp *pb.SignedProposal, chdr *common.ChannelHeader, shdr *common.SignatureHeader, hdrext *pb.ChaincodeHeaderExtension) error {
  	return s.ACLProvider.CheckACL(resources.Peer_Propose, chdr.ChannelId, signedProp)
  }
docs: // CheckACL checks the ACL for the resource for the Channel using the
  // SignedProposal from which an id can be extracted for testing against a policy