header
fun Row.headerCell(content: String? = null, rich: Boolean = false, align: Align? = null, scope: Scope? = null, className: String? = null, init: HeaderCell.() -> Unit? = null): HeaderCell
fun Table.headerCell(content: String? = null, rich: Boolean = false, align: Align? = null, scope: Scope? = null, className: String? = null, init: HeaderCell.() -> Unit? = null): HeaderCell
DSL builder extension function.
It takes the same parameters as the constructor of the built component.