public void setMetaStreamEvent(MetaStreamEvent metaStreamEvent) {
        this.metaStreamEvent = metaStreamEvent;
    }
This method will return the type of the on-demand Query runtime.

@return type of on-demand Query runtime. (one of the types DELETE, INSERT, SELECT, UPDATE,
FIND or UPDATE OR INSERT)
modules/siddhi-core/src/main/java/io/siddhi/core/query/OnDemandQueryRuntime.java