WC_Product::has_file()
Method: Check if downloadable product has a file attached.
Source: includes/abstracts/abstract-wc-product.php:1729
edd_get_theme_template_dir_name()
Function: Returns the template directory name.
Source: includes/template-functions.php:776
bp_core_validate_email_address()
Function: Check that an email address is valid for use.
Source: bp-members/bp-members-functions.php:1624