presto-main/src/main/java/io/prestosql/FullConnectorSecurityContext.java/FullConnectorSecurityContext/FullConnectorSecurityContext
class FullConnectorSecurityContext:    public FullConnectorSecurityContext(ConnectorTransactionHandle transactionHandle, ConnectorIdentity identity)
    {
        this.transactionHandle = requireNonNull(transactionHandle, "transactionHandle is null");
        this.identity = requireNonNull(identity, "identity is null");
    }