check_options() is to be used in the prep function to ensure that options
arguments are lists and contain the right elements.
     
    
    Usage
    check_options(options, exclude = NULL, include = NULL, call = caller_env())
 
     
    
    Arguments
- options
 
options to be checked.
 
- exclude
 
Character vector, elements that can't be present in options.
 
- include
 
Character vector, Allowed elements in options.