named method Null safety
- String name
By default, the field name will be used as the column name, e.g.
IntColumn get id = integer() will have "id" as its associated name.
Columns made up of multiple words are expected to be in camelCase and will
be converted to snake_case (e.g. a getter called accountCreationDate will
result in an SQL column called account_creation_date).
To change this default behavior, use something like
IntColumn get id = integer((c) => c.named('user_id')).
ColumnBuilder<T> named(String name) => _isGenerated();