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