Classic_Editor::post_thumbnail_meta_panel( $content,  $post_id )

	public function post_thumbnail_meta_panel( $content, $post_id ){
		$_post = Helper::get_video_post( $post_id );

		if( !$_post || !$_post->video_id ){
			return $content;
		}

		$has_thumbnail = get_post_meta( $post_id, '_thumbnail_id', true );
		if( !$_post->thumbnails ){
			$has_thumbnail = true;
		}

		if( $has_thumbnail ){
			$content .= '<hr /><br />';
			$content .= sprintf(
			        '<a href="#" id="cvm-import-video-thumbnail" data-refresh="1" data-post="%d"><i class="dashicons dashicons-update"></i> %s</a>',
                    $post_id,
                    __( 'Refresh Vimeo image', 'codeflavors-vimeo-video-post-lite' )
            );
			$content .= sprintf(
				'<p class="description" id="cvm-thumb-response">%s</p>',
				__( 'Will import a fresh image from Vimeo. If already existing, it will be duplicated.', 'codeflavors-vimeo-video-post-lite' )
            );
		}else{
			$content .= '<hr /><br />';
			$content .= sprintf(
			        '<a href="#" id="cvm-import-video-thumbnail" data-refresh="0" data-post="%d"><i class="dashicons dashicons-download"></i >%s</a>',
                    $post_id, __( 'Import Vimeo image', 'codeflavors-vimeo-video-post-lite' )
            );
			$content .= sprintf(
				'<p class="description" id="cvm-thumb-response">%s</p>',
				__( 'Will first search the Media Gallery for an already imported image and will import if none found.', 'codeflavors-vimeo-video-post-lite' )
			);
		}
		return $content;
	}