public Builder removeColumn(String name) {
            Iterator<ClickHouseColumn> iterator = columns.iterator();
            while (iterator.hasNext()) {
                ClickHouseColumn c = iterator.next();
                if (c.getColumnName().equals(name)) {
                    iterator.remove();
                }
            }

            return this;
        }
Sets deferred content.

@param content non-null deferred content
@return this builder
clickhouse-data/src/main/java/com/clickhouse/data/ClickHouseExternalTable.java