This function loads the `X.group.target` dataset into R.
     
    
    Usage
    load_X_group_target(filepath = NULL)
 
    
    Arguments
- filepath
- (optional) Path to the downloaded `.Rdata` file.
If `NULL`, the file will be downloaded automatically. 
 
    
    Value
    The loaded dataset.
     
    
    Examples
    if (FALSE) { # \dontrun{
X.group.target <- load_X_group_target()
} # }