Ejabberd.Config.Attr.extract_attrs_from_block_with_defaults

You're seeing just the function extract_attrs_from_block_with_defaults, go back to Ejabberd.Config.Attr module for more information.
Link to this function

extract_attrs_from_block_with_defaults(block)

Specs

extract_attrs_from_block_with_defaults(any()) :: [attr()]

Takes a block with annotations and extracts the list of attributes.