presto-parser/src/main/java/io/prestosql/sql/tree/NumericParameter.java/NumericParameter/equals
class NumericParameter:    @Override
    public boolean equals(Object o)
    {
        if (this == o) {
            return true;
        }
        if (o == null || getClass() != o.getClass()) {
            return false;
        }
        NumericParameter that = (NumericParameter) o;
        return value.equals(that.value);
    }