getOption.Options: Gets an option
Description
 Gets an option in the options tree structure or return a default value.
Usage
"getOption"(this, pathname=NULL, defaultValue=NULL, ...)
Arguments
pathname
A single or a vector of character strings specifying
     the paths to the options to be queried.
     By default the complete options structure is returned. defaultValue
The default value to be returned, if option is
     missing. If multiple options are queried at the same times, multiple
     default values may be specified as a vector or a list. Value
  If a vector of options are queried, a list of values are returned.
  For non-existing options, the default value is returned.