public function removeContent( ...$content ) {
		if ( is_array( $content[ 0 ] ) ) {
			$content = $content[ 0 ];
		}
		foreach ( $content as $item ) {
			if ( !is_string( $item ) ) {
				// Use strict type comparions so we don't
				// compare objects with existing strings
				$index = array_search( $item, $this->content, true );
				if ( $index !== false ) {
					array_splice( $this->content, $index, 1 );
				}
			}
		}
		return $this;
	}