region.push_back(new mlir::Block);
  auto saved_pos = op_builder.saveInsertionPoint();
  op_builder.setInsertionPointToEnd(&region.front());
  mlir::Operation* cloned_op = op_builder.clone(*op);
  // Add the yield operation.
  op_builder.create<mlir::TFL::YieldOp>(op_loc, cloned_op->getResults());
  // Now emit into the function body again.
  op_builder.restoreInsertionPoint(saved_pos);

    b_builder.Attr("f", b_name_attr);
    b_builder.Attr("Tin", {DT_FLOAT, DT_FLOAT});
    b_builder.Attr("Tout", {DT_FLOAT});
    b_builder.Input({a, a});
    Node* b = builder.opts().FinalizeBuilder(&b_builder);

    Node* c = ops::UnaryOp("Relu", b, builder.opts().WithName("C"));

    // Builds a Symbolic gradient for Unsupported
    NodeBuilder d_builder("D", "SymbolicGradient",
                          builder.opts().op_registry());

  }
}

// A helper class to inline TF::StatefulPartitionedCall ops
struct Inliner : public InlinerInterface {
  Inliner(OpBuilder& builder, SymbolTable& symbol_table)
      : InlinerInterface(builder.getContext()),
        builder(builder),
        symbol_table(symbol_table) {}

  bool isLegalToInline(Operation* call, Operation* callable,
                       bool wouldBeCloned) const override {

}

Operation* ApplyXlaHostTransferAttr(Operation* op, OpBuilder& builder) {
  op->setAttr("_xla_has_host_transfer", builder.getBoolAttr(true));
  return op;
}

// Creates a tf._XlaSendFromHost or tf._XlaSendFromHostV2 op. If device ordinal
// is present, a tf._XlaSendFromHostV2 op is created instead.
Operation* CreateSendFromHostOp(OpBuilder& builder, Location loc,

      if (read_type != last_store.getValue().getType()) {
        OpBuilder builder(last_store);
        builder.setInsertionPointAfter(last_store);
        auto cast = builder.create<TF::CastOp>(
            last_store.getLoc(), read_type, last_store.getValue(),
            /*Truncate=*/builder.getBoolAttr(false));
        read_variable_op.getValue().replaceAllUsesWith(cast);
      } else {

      /*begin=*/
      builder->create<TF::ConstOp>(loc, builder->getI32TensorAttr({idx})),
      /*end=*/
      builder->create<TF::ConstOp>(loc, builder->getI32TensorAttr({idx + 1})),
      /*strides=*/
      builder->create<TF::ConstOp>(loc, builder->getI32TensorAttr({1})),
      /*begin_mask=*/0, /*end_mask=*/0, /*ellipsis_mask=*/0,
      /*new_axis_mask=*/0, /*shrink_axis_mask=*/1);
}

        if (opLambda != null) {
            opLambda.callback(builder);
        }
    }

    public void setEndTime_GreaterThan(Long endTime) {
        setEndTime_GreaterThan(endTime, null);
    }

    public void setEndTime_GreaterThan(Long endTime, ConditionOptionCall<RangeQueryBuilder> opLambda) {
        final Object _value = endTime;

        ScriptedMetricAggregationBuilder builder = regScriptedMetricA(name);
        if (opLambda != null) {
            opLambda.callback(builder);
        }
    }

    public void topHits(String name, ConditionOptionCall<TopHitsAggregationBuilder> opLambda) {
        TopHitsAggregationBuilder builder = regTopHitsA(name);
        if (opLambda != null) {
            opLambda.callback(builder);
        }
    }

        if (opLambda != null) {
            opLambda.callback(builder);
        }
    }

    public void setCreatedBy_Wildcard(String createdBy) {
        setCreatedBy_Wildcard(createdBy, null);
    }

    public void setCreatedBy_Wildcard(String createdBy, ConditionOptionCall<WildcardQueryBuilder> opLambda) {
        WildcardQueryBuilder builder = regWildcardQ("createdBy", createdBy);

        if (opLambda != null) {
            opLambda.callback(builder);
        }
    }

    public void setAuthRealm_Wildcard(String authRealm) {
        setAuthRealm_Wildcard(authRealm, null);
    }

    public void setAuthRealm_Wildcard(String authRealm, ConditionOptionCall<WildcardQueryBuilder> opLambda) {
        WildcardQueryBuilder builder = regWildcardQ("authRealm", authRealm);