pub trait ExtensionArrayTrait: Array {
// Required method
fn storage_data(&self) -> ArrayRef;
// Provided method
fn ext_dtype(&self) -> &Arc<ExtDType> { ... }
}
pub trait ExtensionArrayTrait: Array {
// Required method
fn storage_data(&self) -> ArrayRef;
// Provided method
fn ext_dtype(&self) -> &Arc<ExtDType> { ... }
}