WordPress at a glance
filter is not described

filesystem_method_file filter-hook . WP 2.6.0

Filters the path for a specific filesystem method class file.

Usage

add_filter( 'filesystem_method_file', 'filter_function_name_6558', 10, 2 );
function filter_function_name_6558( $path, $method ){
	// filter...

	return $path;
}
$path(string)
Path to the specific filesystem method class file.
$method(string)
The filesystem method to use.

Where the hook is called

WP_Filesystem()
filesystem_method_file
wp-admin/includes/file.php 1396
$abstraction_file = apply_filters( 'filesystem_method_file', ABSPATH . 'wp-admin/includes/class-wp-filesystem-' . $method . '.php', $method );

Where the hook is used (in WP core)

Does not used.