presto-thrift/src/main/java/io/prestosql/plugin/thrift/ThriftColumnHandle.java/ThriftColumnHandle/equals
class ThriftColumnHandle:    @Override
    public boolean equals(Object obj)
    {
        if (this == obj) {
            return true;
        }
        if (obj == null || getClass() != obj.getClass()) {
            return false;
        }
        ThriftColumnHandle other = (ThriftColumnHandle) obj;
        return Objects.equals(this.columnName, other.columnName) &&
                Objects.equals(this.columnType, other.columnType) &&
                Objects.equals(this.comment, other.comment) &&
                this.hidden == other.hidden;
    }