public function radio() {
			$field = $this->do_field_start();
			$field .= $this->do_field_label();
			$field .= $this->do_field_div_start();
			if ( is_array( $this->options ) ) {
				foreach ( $this->options as $option_id => $title ) {
					$field .= '<label title="' . esc_attr( strip_tags( $title ) ) . '">';
					$field .= '<input type="radio"';
					$field .= $this->do_field_name();
					$field .= ' value="' . esc_attr( $option_id ) . '" ' . checked( $this->value, $option_id, false ) . '/>';
					$field .= $title;
					$field .= '</label>';
				}
			} else {
				$field .= '<span class="tribe-error">' . esc_html__( 'No radio options specified', 'tribe-common' ) . '</span>';
			}
			$field .= $this->do_field_div_end();
			$field .= $this->do_field_end();

			return $field;
		}