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

        Use use = (Use) o;

        if (!catalog.equals(use.catalog)) {
            return false;
        }
        if (!schema.equals(use.schema)) {
            return false;
        }

        return true;
    }