header
Override the header.
const overrides = {
  header: ({ actions }) => (
    <header>
      <span>My header</span>
      <div>{actions}</div>
    </header>
  ),
};Props
| Prop | Example | Type | 
|---|---|---|
| actions | <div /> | ReactNode | 
| children | <div /> | ReactNode | 
actions
A node containing the headerActions.
children
The default node for the header.