src/Collection.php
public function map( Closure $func ) {
		return new static( array_map( $func, $this->elements ), $this->keep_memory, $this->saver );
	}
public function map( Closure $func ) {
		return new static( array_map( $func, $this->elements ), $this->keep_memory, $this->saver );
	}
@inheritDoc

@return static