file_validate_image_resolution(FileInterface $file, $maximum_dimensions = 0, $minimum_dimensions = 0) Verifies
file_file_download($uri) Implements
file_save_data($data, $destination = NULL, $replace = FILE_EXISTS_RENAME) Saves a file to the specified destination
file_validate_name_length(FileInterface $file) Checks for files with names longer than can be stored in the
file_copy(FileInterface $source, $destination = NULL, $replace = FILE_EXISTS_RENAME) Copies a file to a new
file_load_multiple(array $fids = NULL, $reset = FALSE) Loads file entities from the database.
file_tokens($type, $tokens, array $data, array $options, BubbleableMetadata $bubbleable_metadata) Implements
template_preprocess_file_managed_file(&$variables) Prepares variables for file form widget templates.
file_token_info() Implements
template_preprocess_file_link(&$variables) Prepares variables for file link templates.
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