public Builder addOperators(Collection<ExpressionOperator> items) {
            this.children.addAll(items);
            return this;
        }
Adds an {@link ExpressionOperator} to this builder

@param items The expression items to add as children
@return The {@link Builder}, enabling method chaining
stroom-legacy/stroom-legacy-model_6_1/src/main/java/stroom/legacy/model_6_1/ExpressionOperator.java