private function render_instances() {
		$data           = $this->get_data();
		$output         = null;
		$this->instance = 0;
		if ( ! empty( $data[ $this->slug ] ) ) {

			$data = array_filter( $data[ $this->slug ] );

			foreach ( (array) $data as $instance_id => $instance ) {
				$output .= $this->render_instance( $instance_id, $instance );
			}
		}

		return $output;
	}
private function render_instances() {
		$data           = $this->get_data();
		$output         = null;
		$this->instance = 0;
		if ( ! empty( $data[ $this->slug ] ) ) {

			$data = array_filter( $data[ $this->slug ] );

			foreach ( (array) $data as $instance_id => $instance ) {
				$output .= $this->render_instance( $instance_id, $instance );
			}
		}

		return $output;
	}
private function render_instances ( ) { $ data = $ this -> get_data ( ) ; $ output = null ; $ this -> instance = 0 ; if ( ! empty ( $ data [ $ this -> slug ] ) ) { $ data = array_filter ( $ data [ $ this -> slug ] ) ; foreach ( ( array ) $ data as $ instance_id => $ instance ) { $ output .= $ this -> render_instance ( $ instance_id , $ instance ) ; } } return $ output ; }
Render each instance from data

@since  1.0.0
@access private
@return string|null HTML of rendered instances
Render each instance from data