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package org.vertexium.cypher.ast.model;

import java.util.stream.Stream;

public class CypherIsNull extends CypherAstBase {
    private final CypherAstBase valueExpression;

    public CypherIsNull(CypherAstBase valueExpression) {
        this.valueExpression = valueExpression;
    }

    public CypherAstBase getValueExpression() {
        return valueExpression;
    }

    @Override
    public String toString() {
        return String.format("%s IS NULL", getValueExpression());
    }

    @Override
    public Stream getChildren() {
        return Stream.of(valueExpression);
    }
}