public String getInsertEventExecutionStatement() {
        return QueryBuilder.insertInto(keyspace, TABLE_EVENT_EXECUTIONS)
                .value(MESSAGE_ID_KEY, bindMarker())
                .value(EVENT_HANDLER_NAME_KEY, bindMarker())
                .value(EVENT_EXECUTION_ID_KEY, bindMarker())
                .value(PAYLOAD_KEY, bindMarker())
                .ifNotExists()
                .getQueryString();
    }
@return cql query statement to insert a new event execution into the "event_executions" table
cassandra-persistence/src/main/java/com/netflix/conductor/cassandra/util/Statements.java