pub fn get_participants_with_state(
rpc_client: &RpcClient,
state: Option<ParticipantState>
) -> Result<HashMap<Pubkey, Participant>, Box<dyn Error>>
pub fn get_participants_with_state(
rpc_client: &RpcClient,
state: Option<ParticipantState>
) -> Result<HashMap<Pubkey, Participant>, Box<dyn Error>>