presto-main/src/main/java/io/prestosql/metadata/LongVariableConstraint.java/LongVariableConstraint/LongVariableConstraint
class LongVariableConstraint:    @JsonCreator
    public LongVariableConstraint(
            @JsonProperty("name") String name,
            @JsonProperty("expression") String expression)
    {
        this.name = name;
        this.expression = expression;
    }